Would texting him be creeperish?

This guy liked me two years ago but I wasn’t interested. Now I like him, and I think he still likes me too because I catch him looking at me sometimes. We have no classes together and I rarely see him in the halls so we can’t talk. We’re friends on facebook so I know he’s still single, and he has his cell number on there. Would it be weird for me to randomly text him? I don’t want to seem like a creeper but I don’t know how else to talk to him. Suggestions?