Oh right, yes, I got the synastry chart now. Well, the Moons are both in compatible signs which is nice. Suns being in square is very often seen in longterm relationships. The square is formed out of compatible signs, dont forget that! It shows dynamic interchanges between the two of you .Moon-Sun opposition same thing, very common in relationship charts. Oppositions are better than squares. Here you can still negotiate and get to a mutual conscensus. Your Moon is quite s(mothering) sextiling Pluto and trining Mars in Scorpio, maybe a bit too heavy for his Saggittarius Sun.You can talk things over without problems, the two Mercuries make nice aspects, so that is very important. Your Merc. squares his Mars in his 10th so arguments could be about his career or you mingling into his affairs. After all, your Merc is in your 7th house of partnership and trining your Mars, so you can come over fairly strong I I am not mistaken. Nevertheless, here you can see that the square is made out of Water signs which are compatible to one another and it could therefore also be that your comments could have a positive (energizing) effect on his career. You are very convincing. Try to stop worrying about things too much. I know, Sun conjunct Saturn in the 8th and then also conjunct Chiron, it shows real suffering connected to you worrying about everything. 8th house is famous for digging and wanting to know in order to find security in yourself. This is also what the square of the Suns are telling you. He is the optimistic one, you are the (hopefully not eternal) pessimist. I can see that he could suffer through relationships because of the conjunction between Chiron and Venus in his 1st house. Probably something in connection with his early environment, the 4th house (ruled by his Venus). The only thing that could work out a bit less positive are the Ascendants. His in Earth, yours in Fire. He of course has an inner conflict between his Ego needs and his Emotional needs (Sun in Fire, Moon in Earth) and this is reflected in those Ascendants. His Asc. ruler is in a fire sign, yours in a water sign which is not incompatible, more neutral I would say. In fact, your Sun/Saturn conjunction go well with his Capricorn Ascendant really. both of you have strong Saturnian qualities and your Saturn is in a fire sign, like his, compensating things. The Moon-Jupiter trine is a very helpful aspect to have and can help enormously when there should be problems.(and who does not have those!!). His Descedant falls in Cancer, he clearly likes a Cancerian partner, yours falls in Aquarius, could mean that you look for someone who lets you be free within the relationship. This could maybe more of a problem as he is quite "restrictive" with Sun, Moon and Merc all three in Capricorn AND in his 12th house. He is extremely sensitive and could get hurt easily and it can be difficult for him to open up and talk about things that bother him. He could have the tendency to turn inwards at times, wanting to retreat and that could be difficult for you to accept. But if you give him this "freedom" to do that, that will then work out OK. He has had painful experiences in very early childhood I believe.
He has Uranus in his 7th house, intercepted, co-ruling his Ascendant and Venus and Chiron are also intercepted. Intercepted planets cannot easily express their energy and his Venus is especially sensitive and of course not happy in Aquarius. Here we see a Venus-Uranus combi and a Uranus in the 7th house which often points towards separations at some point in the life, when transits trigger it. He is very prone to that. You have Uranus ruling your 7th house and conjunct Pluto, also very potent conjunction showing potential trouble and squaring the ruler of his Sun.
All in all, I find that basically there is a strong, good attachement between you two but potential problems that need to be addressed. Either when they happen (and you can talk it over well) or before committing yourselfs completely. You have 8 house issues to resolve (within yourself) he has 12th house issues to deal with. That is probably also why you are attracted to one another. You have both not had it easy I believe so somehow, you understand one another. You just have to be careful not to project your problems onto one another, which is often the case in relationships. I hope this helps you a bit to see things clearer. Good luck to you and may things work out well. Cheers, Star.