He may like me.....Please Answer!!!!?

Hey one of my guy firends convinced me that I should go out with this guy, because he thinks we would be a cute couple, anyay I do know this gy he is really sweet, I 've texte him b4 and we had a good convo, anyway I have recently friended him on facebook and he accepted, I thought that I would Chat with him, because I don't have any of my classes with him. Problem is he's never on chat so should I send him a message, if so what should i say?!?! Thanks so much!!