Tough. Maybe try these things.
1. touch/hold his hand and see how he reacts
2. Schedule a hang out, and hold his hand at the end
3. Lie and say, a dude in my class just told me he likes me, what would you do if a guy confessed to you?
4. Drop it likes it's no big deal, act all chill and stuff (even though you most likely won't be) so if worst comes to worst he ends up reacting badly, you can still be friends
Also, if this doesn't end well, remember, you sound like an amazing boy and I'm sure you will find the right guy for you. I'm not sure about my sexuality (12 F), but I have a crush on this amazing girl, but I'm not out, so I can't tell her, *cry*, but I think that you will slayfully do this.
*hugs* GOOD LUCK