I feel like I'm using him for sex...unintentionally..

I keep on saying I like him. And I feel like I really do (I mostly don't know what I feel for some reason in general). But every time we hang out I always initiate sex and it seems like I do that because I think all men want from women is sex.. and I'm acting on it.. (I was sexually assaulted at a very young age). Now, I want to change this mindset. I really like him. He keeps on telling me that we don't always have to hook-up or whatever and I know that. But... damn..