I have a coworker who is white and married a black woman. He seems to be very happy.

I honestly think you just shouldn't ask him nothing, maybe just hang out more, talk more, do what youz normally do, and maybe eventually he will be the one to do the asking and everything like that.. If not then go ahead and ask him so you wont waste your time and fall for him even more.... Go for the kill lol

don't even look at it as interracial. your a person like anyone else, it does not matter what freaking color you are. Just go up to him and tell him you like him and if he likes you. He might really like you too. If you guys do talk about that, tell him you don't care what other people say. Maybe he'll understands. I had people all my life tell me what color i should date (i am white) but i was in love with my best friend and he was black. And he never dated a white girl so one day I told him i liked him and found out he did to and we talked about other people saying stuff and decided to just ignore them. thats what you need to do. good luck.