Unrealistic crush?

There's this guy in my class and I've got a crush on him. I think he likes me in a classmate kind of way, and we occasionally make random eye contact and we'll smile at each other. The problem is that we're in completely different cliques, so it's kind of far-fetched to think that we'll ever date or anything like that (he is quite popular while I'm not at all). I've tried to just forget about him, but one of my teachers made us work on a group project together that will take up to the end of the year and he's always really nice to me and that just made it pretty much impossible to move on.

Should I wait and see how things go or just ignore my feelings as much as possible?
Unrealistic crush?
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