Wondering about crush.

[driftwood]

I think OlderButWiser has the right idea. Especially assuming that he's also about 16, he may not even be sure whether he's gay, bi, or just curious. But definitely go the burgers/coffee route, don't do it on facebook. To really get to know him, you need the face to face interaction - the body language, facial expressions, eye contact, etc. Then from the feedback you get, you'll know when to add in the subtle flirting. Can't go wrong.