A: I think every guy likes booty calls, late at night or out of the blue! As long as they know it's a booty call I don't see any feelings getting hurt.
A: Re-read your posts before you just throw it up. And, yes, if he's taking your stuff and smiling, and taking an intrest in you, he probabaly wants to get to know you. For your age group, I would count that as flirting.