He likes it rough, I like it a little bit more sensual....?

I had the same issue when I dated a girl that kissed aggressively. It was really odd at first, having tongue everywhere, and it was kind of nasty, but I just got to the point that I started to like it. I still don't REALLY like the tongue... I still think it feels like I'm being suffocated by a python... but I love the aggressive tossing and turning that goes with it, to the point that when I dated a girl that just enjoyed slow, pionate kisses I was completely bored. My advice is, find something that you do like, and concentrate on that. Maybe you'll eventually like it. Or, if I'm an indication, if you don't have a common kissing style, the relationship may just not work in the long-term. Think about it... do you really want to have to compromise on kissing forever?