Help...?

I'm 16 year old. I've always kinda been into girls, but recently I've been developing intense crushes on guys. Stronger than I can cope with. I think about them even when I'm not thinking about them. But I get really awkward around guys that I like. I freeze up, I find it difficult to hold a regular conversation. It's difficult for me to look them in the eye. I just started falling for a guy I have to work with one of my extracurriculars. I'm not sure if he's gay, but I really can't shake how I feel about him. The worst part is probably that I'm too afraid to come out to anyone. I already am made fun of at school and this would probably be the final nail in the coffin. But I really want to tell him. Advice?