If you're a gay,you like a man who isn't a gay,and you love

tell him the truth.tell him that u love him..just go for it..maybe there's gonna be a bad result..u know like losing him..but i think it's technically an end for u..endless nights when u thinking of him just torment u...all u need is an end..a reason for steping forward and not gonna be stuck in this disastrous dilemma...
by the way..u have no idea about his feeling..maybe the result is not as bad as u think..no risk no fun.
just for reference
(actually,i had a same experience..and i think i just dealt w/ it perfectly..)

let him go

try forget about him if he will never be gay
don't waste your time
spend your time loving someone else who might love you in return

DROP。