The long, careful answer would be that I genuinely don't think you can tell that from a synastry. It can shift around, and sometimes one person in a synastry seems to embody/mirror the other's planets in conjunction...I see it all the time. Like people have a Sun-Saturn conjunction in synastry, but the Sun person "is" the Saturn in the relationship and vice-versa. I also don't think synastry can tell the whole story of even WHETHER the two people are attracted. It's one thing even the really good astrologers don't always get right from looking at synastry.The short answer: You are.
And/or, there would also be the possibility that he could be more "attracted" (depending on how you define that), but you CARE waaaay more. He's off with his Sag/Cap combo caring about adventures and position in the world. I'd be so surprised to see him posting on an astrology website asking "who is more attracted, me or her?" He wouldn't care what the people thought on the astrology website. He would just think, i'm attracted.
Other than having the kind of turbo-Plutonian stellium that leads some of us to want to post our synastries on astrology websites, you are the Mars in that Mars-Sun conjunction...your energy goes to his Sun in some way. That Sun falls in your 7th, while the conjunction might have a more familial flavor for him. I can't see the degrees, but the way his Sun hits your Mars (conjunction) is more intense/potentially obsessing and stimulating than the way your stellium hits his Mars (trine.)
You're the Neptune in Venus-Neptune and Moon-Neptune. I don't necessarily think that means romanticization or seeing the other person through rose-colored glasses, but it almost always means some level of inaccuracy in how the Neptune person experiences the Venus or Moon person and sometimes a misinterpretation of his/her feelings.