It looks really good. Thank you for putting it up. Having all three charts to view in one screen is very helpful.
Just to clarify, if as you mentioned earlier that your Sun conjuncts his NN, then his natal is the first of the three charts in this link and you are the second one?
If this is so, then we've commented on your Sun conjunct his NN, and so the role you play in evoking his life's calling, what he needs to learn in this incarnation.
I would suggest that your Sun being exactly conjunct his Moon, by itself, is a powerful karmic connection. The fact that your Sun also taps into his grand water trine, which seems to me the main signature in his chart, and it does so via a Sun Moon conjunction also points to an even more complex a connection/understanding that you about his inner feeling life and how it makes itself manifest in his outer life.
I don't know if this is synastry of soul mates, or even what synastry between soul mates might look like. But the two of you do have a wide array of contacts between your charts, easy and not so easy. It is the perfect material to see if a relationship can work out between you.
I am wishing you the best,