Advice on a crush?

Being male and having some experience with this sort of thing, I think آپ should go somewhere private and talk to him a bit, and ask when it seems the least awkward. If he likes آپ then he will either tell آپ so almost immediately when آپ ask, یا act very shy and embarrassed, and try to avoid answering. If he doesn't like آپ (romantically; آپ can be دوستوں either way), then he will say so, یا he will think going somewhere private is odd and misleading. The worst that could happen is he will say he doesn't romantically like you. Discovering that early will be far better than trying to find out for far too long, rather than consider someone who might like آپ back. It may seem embarrassing یا make آپ nervous, but relationships cannot exist without a beginning. The best of luck!

just ask him if he likes آپ I did that and needless to say a سال later we got married. if he doesn't we'll his loss

Worst that could happen is if he say no.
Worst that will happen if آپ never ask is a bunch of nervous tension of "What if?".
You'll either forget about him یا regret never asking.
So go ask him out.

Talk to him

I know this has already been کہا سے طرف کی everybody else & can be easier کہا than done, but talk to him. Chances are though, that he'll either say no یا deny it, but if he shows any of the signs (e.g. blushing, acting awkward, getting defensive) then he most definitely likes آپ & آپ should do something; یا if your to shy, ask 1 of your closest دوستوں to talk to his best friend in case he told them. Just try not to get too depressed if he honestly doesn't, there's still friendship.