Vous êtes Bélier et lui Scorpion. Alors, compatibles ou pas ?
Je vais peut-être casser un petit mythe, mais avec seulement vos deux signes astrologiques, je ne peux pas vraiment vous répondre. Je pourrais bien sûr vous parler du Feu du Bélier, de l’Eau du Scorpion et de la façon dont ces deux énergies s’entendent (ou pas), mais ça ne raconterait qu’une toute petite partie de votre relation.
En réalité, quand je regarde un couple, je regarde les deux thèmes astraux dans leur ensemble. Votre signe solaire, oui, mais aussi votre Lune, Vénus, Mars, Mercure, votre Ascendant, vos maisons, les aspects entre vos planètes… C’est là que ça devient vraiment intéressant.
Parce qu’en croisant vos deux thèmes, je peux regarder votre façon d’aimer, vos besoins affectifs, votre manière de communiquer, ce qui crée de l’attirance entre vous, les endroits où ça coule tout seul et ceux où vous avez parfois beaucoup plus de mal à vous comprendre.
C’est ça, une synastrie : deux thèmes astraux que l’on met en relation pour essayer de comprendre ce qui se joue entre deux personnes.
Donc non, je ne vais pas vous dire que Bélier + Scorpion = 68 % de compatibilité. Et tant mieux, parce que votre couple est quand même un peu plus intéressant que ça.
Do you want to know your astral compatibility?
Every month, I draw 5 duos at random from those who have signed up to offer them a free personalized synastry.
To participate, I simply need both of your birth details.
First thing in astrology: forget about "82% compatible"
You have surely come across those calculators that tell you in a few seconds that you are 82% compatible. I completely understand the concept; it’s fun to do (especially when the result is in our favor), but astrologically, this number doesn't mean much.
I completely understand why we love this kind of answer. A nice "92% compatible" is simple, it’s understood in a second, and above all, it gives the impression of having an answer.
But on the other hand, a real analysis of two birth charts requires looking at and cross-referencing dozens of pieces of information. So, it is necessarily less immediate.
And when we are already asking ourselves a thousand questions about a relationship, having a little number that seems to answer "can this work between us?" is obviously tempting and reassuring.
Except that, in reality, a relationship does not fit into a percentage. We can be highly compatible on some things and much less on others. Having a way of communicating that works very well, but completely different emotional needs. Huge attraction, but also two or three subjects where it regularly gets stuck.
And that is precisely everything I will look at in a synastry. How you love, how you communicate, what each person needs to feel good in the relationship, what brings you closer, what creates attraction, but also the areas where you sometimes have a much harder time understanding each other.
So, even after having combed through your two birth charts, I will not tell you that you are 76 or 92% compatible. It would be far too simple to describe what is really happening between two people.
So, how do I check the compatibility of two birth charts?
How I study compatibility between two birth charts
Before putting your two charts side by side, I always look at each one separately. Because I need to understand a bit about who you both are before looking at what happens between you. I want to know how you love, what you need in a relationship, how you communicate, what reassures you, and what, on the contrary, might trigger you a little more.
And sometimes, that explains some very concrete things. You, for example, might need to talk right away when something is wrong. The other person, not at all. They need to step away, process things, and come back later. You might take their silence for disinterest, while they experience your questions as pressure. When, in reality, neither of you cares any less about the other. You just handle things in completely different ways.
It’s this kind of disconnect that I find super interesting to look for in a synastry. Not just knowing if your planets "go well together," but understanding how each person functions on their own and what that results in once you are both in the same relationship.
What I look for in your two themes
I’ll spare you the 47-page astrology lecture, I promise. But there are still a few major pieces of the puzzle I want to show you, because they help explain why just comparing two astrological signs really isn't enough.
Your Moon: what truly reassures you
The Moon is one of the first things I look at when I study a relationship, because it gives me a lot of information about how you experience your emotions, your instinctive reactions, and especially what you need to feel secure with someone.
And it is often quite revealing in a couple, because you can sincerely love each other without having the same emotional needs at all. Some people need to talk a lot, to be reassured by words, or to feel that the other person is very present, while others will need more space, trust, or will show their attachment in a much less demonstrative way.
The trap is that we naturally tend to give others what would make us feel good. We can therefore be convinced that we are doing everything necessary to reassure or love someone without necessarily giving them what they truly need. It is often in these small discrepancies that the Moon becomes particularly interesting to look at in synastry.
Venus: your way of loving
Venus tells me about how you love, seduce, and show your affection, but also how you like to receive it. And that is particularly interesting to compare in a relationship, because we don’t all express our feelings the same way.
Someone may be very much in love and show it primarily through their presence, gestures, or everything they do concretely for the other person, while their partner expects more words, demonstrations, or time spent together to feel loved. The love is certainly there, but it is not always expressed in the way the other person recognizes most easily.
That is why, with Venus, I don’t just look at how each of you loves on your own. I especially look at how your two ways of loving meet, what you naturally give each other, and what you might sometimes expect from one another without necessarily managing to make each other understand.
Mars: where things are heating up a bit
Mars speaks a lot about desire and attraction, but also about how we act, assert ourselves, and go after what we want. In romantic synastry, it is therefore obviously a planet I look at to understand what creates chemistry between two people, especially when it comes into contact with Venus or other personal planets.
But Mars isn't just about attraction. It can also provide indications of how each person reacts when there is tension, asserts their desires, or confronts the other. And it’s quite interesting because the same energy can be very seductive at the beginning of a relationship and become more irritating when it manifests in daily life. That’s why I always look at Mars in both ways: what creates desire between you, but also the way your temperaments can sometimes clash with one another.
Mercury: your way of communicating and understanding yourself
Mercury tells me about how you think, communicate, and put your thoughts into words. In synastry, I look at it a lot because two people can be very close, have strong feelings for one another, and yet still frequently feel like they are failing to understand each other.
We simply don’t all communicate in the same way. Some people get straight to the point while others need to explain the whole context; some need to talk to understand what they are feeling, whereas others prefer to sort through their thoughts before discussing them. Even the way one reacts to a disagreement can be very different. These are mismatches that might seem quite trivial on paper, but which take up a lot of space in a relationship when they repeat. Looking at Mercury in both of your charts allows you to understand how you naturally exchange, but also why certain misunderstandings arise more easily between you.
Saturn: commitment, stability and points of tension
Saturn sometimes has a bad reputation in astrology, whereas in synastry its role is much more nuanced. It can speak to what gives structure and stability to a relationship, how one views commitment and the long term, but also to certain limitations or difficulties that will require more patience and maturity from the couple.
Depending on the planet it encounters in the other person's chart and the aspect it forms with it, Saturn can therefore be experienced in very different ways. Some contacts can provide a true sense of solidity and the desire to build together, while others can bring out blockages, frustrations, or a feeling of restriction.
That is why I never consider the presence of Saturn as a bad sign in itself. I look at what it touches within each person and the place this dynamic occupies in your relationship as a whole.
And what about all the others?
Yes, I also look at the Sun, Jupiter, Uranus, Neptune, Pluto, the angles, the houses… But above all: I look at how it all speaks to each other. Because knowing your placements separately is only the first step.
And when your planets meet... they teach you a great deal
Once I have looked at your two charts separately, I compare them to see how the planets in one interact with those in the other. That is where we really get into synastry.
For example, I will look at whether your Venus forms an aspect with their Mars, if their Moon is connected to your Saturn, or even how your Mercuries interact. These connections between planets are what we call aspects: conjunctions, sextiles, squares, trines, or oppositions. Obviously, they do not all tell the same story. Some show ways of operating that align quite naturally, while others show more tension or differences that will need to be navigated. And their meaning changes completely depending on the planets involved: a square between two Mercuries does not tell me the same thing as a square between Venus and Mars.
It is for this reason that I do not count the number of "good" and "bad" aspects in a synastry. I look instead at the dynamics that emerge from the whole, and especially those that repeat in several places across your two charts.
Is a square in synastry necessarily a bad sign?
When you start looking at your synastry yourself, you can get worried quite quickly when you see several squares appearing between the two charts. However, their presence does not mean that a relationship is bad or that it cannot work.
A square is first and foremost an astrological aspect, meaning an angle formed between two planets. We call it a square when they are approximately 90° apart on the zodiac wheel. In astrology, this aspect is associated with a certain tension between the two energies involved: they do not spontaneously function in the same way, and their meeting can create friction, stronger reactions, or require more adjustments.
In synastry, therefore, everything depends on the planets that form this square. A square involving Mercury, for example, might draw my attention to communication and how each person understands or expresses things, whereas a square between Venus and Mars will tell me more about the meeting between the way of loving, desire, and how each person expresses what they want. I will also look at the precision of the aspect and, above all, everything surrounding it in both charts.
Conversely, a trine corresponds to an angle of approximately 120° and generally indicates a more fluid relationship between two planets. The energies find it easier to work together, without the two people necessarily needing to think about it or put in much effort.
But this is where one must avoid translating too quickly "trine = good relationship" and "square = bad relationship." A synastry with several squares can contain a lot of attraction, stimulation, and movement, while still having certain very clear points of friction. A very fluid synastry, on the other hand, can show a lot of ease between two people without necessarily allowing us to conclude anything about the depth of their feelings or the duration of their relationship.
That is why I never judge compatibility based on a square, a trine, or even a handful of aspects taken separately. What interests me is the way all these interactions fit together and the major dynamics that ultimately emerge from the whole.
A concrete example of what I can see in a synastry
Let's take a fairly simple example. In a synastry, I might find several highly harmonious aspects around Mercury, which show me that communication is quite easy between the two people. They understand each other quickly, are able to put into words what they are thinking, and can take great pleasure in exchanging with one another.
By looking at the rest of the chart, however, I might notice that their Moons are much less in agreement. One person may need a lot of closeness and reassurance when they don't feel secure, while the other tends to distance themselves when experiencing a strong emotion. We can therefore have two people who communicate very well in daily life, but who have much more difficulty understanding each other as soon as they are both emotionally affected.
Alongside that, I might also find aspects between Venus and Mars that show a very present attraction, or contacts with Saturn that bring another dimension to the relationship and to how each person envisions the bond over time.
This is exactly why a compatibility percentage seems quite absurd to me. What are we supposed to be adding up? Communication, attraction, emotional security, the way of loving, the way of managing disagreements? And what weight should be given to each of these things?
In this example, I would not say that these two people are "very compatible" or "not very compatible." Instead, I would explain to them that they seem to have a real ease in communicating and a significant attraction, but that their emotional needs may be more difficult to align, especially in moments when they do not feel secure.
It is these kinds of nuances that I look for when I read a synastry. A relationship can be very simple in one area and much more complicated in another, just like any relationship in real life.
Why am I so attracted to this person?
This is a question to which synastry can provide some quite interesting elements. Attraction is obviously not read in just one place in the chart, but certain contacts between Venus, Mars, the Sun, the Moon, or the angles can show that a person is particularly touching something in the other. Depending on the charts, I may also look at Uranus, Neptune, or Pluto when they form sufficiently significant aspects with personal planets.
This sometimes makes it possible to put words to an attraction that is not necessarily very rational. You can meet someone who does not particularly match what you thought you were looking for and still be very attracted to that person.
You just have to keep in mind that the intensity of the attraction alone does not say whether a relationship will be easy to live with. You can find a great deal of alchemy in a synastry and, at the same time, find affective or emotional functioning that is much more difficult to harmonize. This is precisely why I always look at the rest of the chart.
Why can we love each other and have so much trouble understanding one another?
Because having feelings for someone doesn't necessarily mean having the same way of communicating, managing emotions, or reacting when something is wrong. For instance, I might find a great rapport between two Venuses, showing me that their ways of loving align quite naturally, while at the same time seeing more complicated aspects around Mercury. The feelings themselves aren't at issue, but the two people may regularly clash over the way they say things, how they interpret each other's reactions, or the timing they choose to communicate.
This is a distinction I find important in synastry, because it avoids reducing everything to love. You can love someone and not always know how to connect with them. Understanding where the disconnect truly lies already allows you to view the relationship a little differently.
Why do we always argue about the same things?
No, and that is not what I am looking to do with astrology anyway.
Synastry can provide a great deal of information about a relationship: what seems to work quite naturally, each person's emotional needs, communication, attraction, differences in functioning, or even certain points that may require more adjustments. It cannot decide what two people will do with all of that.
There is also a whole part of your history that does not appear in a chart comparison. What you have experienced, the way you have evolved, your current situation, your choices, and obviously those of the other person all count in how a relationship is built.
Therefore, I do not use synastry to announce that a person will come back, that a relationship will necessarily last, or that two people are "destined" to be together. I use it to understand a dynamic, not to decide its outcome.
And what if I don't know their birth time?
It is possible to perform a synastry without knowing the exact birth time, but it is not my preference. With the date, location, and even an approximate time, I can already work on a good portion of the chart and study many aspects between your planets.
However, the less precise the time is, the more certain information must be treated with caution, particularly the Ascendant, astrological houses, and angles. One must also be careful with the Moon, as it moves quickly and can sometimes change signs during the day.
So yes, I can work with an approximate birth time, but if you have the possibility of finding the exact time, I strongly recommend it. I prefer to have both charts as precise as possible to be able to complete the analysis and avoid drawing conclusions based on information I am not certain about.
So, are you compatible?
You have probably understood by now: this is not really the question I like to ask of a synastry.
I find it much more interesting to try to understand why you were drawn to each other, what works particularly well between you, what each person needs to feel loved, or why certain topics become so easily sensitive while others never pose a problem.
It is also interesting to see what each person brings to the other. Sometimes there are qualities that we very clearly look for in someone, and other things we didn't even know we needed until we met them.
It is this way of looking at compatibility that made me want to create [US — User Manual]: not an answer to "will we end up together?", but an analysis of how your relationship actually works.
Synastry [US - User Guide]
To create your synastry, I start with both of your complete birth charts. First, I examine your individual ways of operating, then the aspects that form between your planets and the major dynamics that emerge from the whole.
The analysis is then organized around several key questions that often arise in a relationship.
Why you?
I look at what might have created the attraction between you, what brought you together, and what each person seems to particularly appreciate or seek in the other.
How you love
Your emotional needs are not necessarily the same. This section helps to understand how each person shows their attachment, what they need to feel loved, and the areas where your two ways of loving naturally understand each other or require more adjustments.
What works between you
Here, I bring together the dynamics that form the true pillars of your relationship: your complementarities, what you share naturally, and what each can bring to the other.
Where things get stuck
It is not a matter of looking for who is right or wrong, but of understanding the differences in functioning that can create tensions or misunderstandings between you and how each person may experience them on their own.
What you don't always say to each other
This part focuses more on the needs, sensitivities, or vulnerabilities that may be harder to express directly in the relationship.
Your major dynamics at a glance
I conclude with a synthetic reading of several dimensions of your relationship: attraction and desire, emotional connection, communication, construction and stability, as well as the intensity of the bond.
You will also find your greatest strength, your main point of vigilance, and what, according to your synastry, deserves to be particularly nurtured in the relationship.
By the way, if you are looking to give a synastry as a gift for a birthday, Valentine's Day, or simply to someone who loves astrology, I have also gathered my astrological gift ideas right here.
Featured product
![Personalised Synastry Reading - [US, The Two of You, Decoded]](http://cosmose-astro.com/cdn/shop/files/Couple_Synastrie_Cosmose_Astro_7725401f-ccb1-40d8-b1ab-a6ba570b1157.png?v=1790367176&width=3840)
![Personalised Synastry Reading - [US, The Two of You, Decoded]](http://cosmose-astro.com/cdn/shop/files/Synastrie_couple_1_0e160c4e-ecb3-4cbd-95c1-0820e95543b6.png?v=1790367289&width=3840)
![Personalised Synastry Reading - [US, The Two of You, Decoded]](http://cosmose-astro.com/cdn/shop/files/Us_The_two_of_you.png?v=1791298032&width=3840)
![Personalised Synastry Reading - [US, The Two of You, Decoded]](http://cosmose-astro.com/cdn/shop/files/Synastrie_couple_Cosmsoe_Astro_e645fa8a-8a34-43fc-b051-8651c2aa7fab.png?v=1790367331&width=3840)
![Personalised Synastry Reading - [US, The Two of You, Decoded]](http://cosmose-astro.com/cdn/shop/files/US_the_two_of_us_cosmose.png?v=1791298859&width=3840)
Personalised Synastry Reading - [US, The Two of You, Decoded]
€69,00
Taxes included.
Pickup currently not available
Frequently asked questions about birth chart compatibility
How can we determine our romantic compatibility using our birth charts?
When I want to look at the astrological compatibility between two people, I use synastry. In practical terms, I take both your birth charts, place them side by side, and look at what is happening between your planets: the aspects they form with each other, but also the houses and angles when I have your birth times.
But I much prefer to talk about how you function together rather than giving you a compatibility rating. Because, for me, synastry is mainly about understanding what is at play between two people: what is fluid, what is less so, what brings you closer together, and the areas where you might sometimes struggle to connect.
Which planets should I look at for romantic compatibility?
There is no magic planet that will tell me whether you are compatible or not. That would be much too simple. I will obviously be looking closely at the Moon, Venus, Mars, Mercury, or even the Sun, because they give me plenty of information about how you love, your emotional needs, your way of communicating, or the attraction between you. But Saturn, Jupiter, Uranus, Neptune, or Pluto can also reveal some very interesting things about your relationship.
And above all, I will never look at a planet in isolation. A Venus or a Moon can say one thing in one part of the chart and take on a completely different dimension depending on the aspects it forms and what is around it. It is really the combination of both charts that interests me.
What is the difference between astrological compatibility and synastry?
Astrological compatibility is a fairly broad term. Basically, it’s about trying to understand how two people can function together based on astrology. Synastry is a way to determine that compatibility. We actually take your two birth charts and compare them to see what happens between them. And naturally, that tells you a lot more than simply comparing your two zodiac signs.
Can synastry be done without a birth time?
Technically, it is possible to look at certain things without knowing the birth time. But personally, I do not recommend it, and I do not perform synastry without it.
Without a precise time, I am missing the Ascendant, the houses, certain angles, and sometimes even a sufficiently accurate position for the Moon. And for an analysis that aims to delve into the details of your relationship, I find that too much information is lost.
So at Cosmose, I prefer to do things thoroughly: I need the date, place, and time of birth of both people to perform your synastry.
Can astral compatibility tell if we are going to stay together?
No, and I prefer to be clear about this: astrological compatibility (or synastry) cannot tell you if your relationship will last or what the other person will be doing in six months. It can, however, help you understand a great deal about your relationship, about what works naturally between you, what sometimes requires a bit more effort, or why certain topics always keep coming back to the same place.
For me, synastry is used to better understand a relationship, not to predict its future.