@naujda095, welcome to Fluther. I happen to be gay, too, and I’ve faced your conundrum. There’s little you can do other than asking him outright, which can leave you open to hurtful rejection, or asking friends about him, which will bring your crush out into the open, or asking him to meet for a soda, or simply watching him from afar.
I don’t know how old you are or if you’re out, but what you’re going through is something all gays experience. All people experience it actually. You’re not alone. Learning the ropes of making new friendships and romantic relationships is part of maturing.