Don't give up. Give yourself time. Explore what turns you on, not necessarily just with your body or with your body at all, but what turns you on in your MIND: i.e. scenarios, dirty thoughts, fantasies, thoughts of love, thoughts of ??!!!!! - you tell me.
It's all about discovering what YOU like, and what gives you pleasure - finding it for yourself and then learning to ask for it. You're still so young. I'm 27 and I have friends my age who haven't come from sex or even at all. A lot of people work on this. You'll get there. You'll bloom at your own pace. Trust that.
Have fun!