I was sixteen when I entered college, I second the idea of joining some clubs. Find what fits you and stay with it. Campuses (most of them at least in the Northeast where I'm from) have decent peer and mentor support for students who are dealing with questions of sexuality. While jerks exists in any place at any time who will hold your sexuality against you, if you are comfortable with it, maybe this new experience would be a good time to joint a gay community student group. I know some people just don't identify with gay culture, but coming out of the closet while being on your own for the first time at 16 seems like a big task.

I guess what I'm saying is embrace who you are as per Soren Keirkegarrd's advice and find support for that process.