I've never talked to my crush; would it be strange to add him on Facebook even if we have a mutual friend?

I've never talked to him, because we don't have much in common: we're in different programs at school, me being an honors student while he's an international student; I'm quiet, and he is too, but he's always with a group of people; my parents are from Jamaica whereas he's Kosovar. Nevertheless, I'd like to say SOMETHING to him before school ends this year and vowed to myself and my therapist that I would. Still, I chicken out and I can't ever get him alone at school.

We're on break now. The break has one more week in it, and the wait is killing me. I'd like to do something now. So, would it be strange if I added him on Facebook? We have a mutual friend who's Kosovar as well, and I'm wondering if that would make me seem like less of a weirdo.