I'm terrible at asking out women, they always reject me that way, so my girlfriends have asked me out. I get freaked out when they ask me out though because it happens so seldom, I get a knee-jerk response to reject them even if I like them. Like one coworker asked me if I'd like to go along with her and her friends to a buffet meal, and I quickly replied no even though I probably would have liked to do so. I think I had in the back of my mind that maybe she was just asking me out as a "buddy", and I didn't want to be just one her buddies, or maybe I was worried about the group social pressures.

Maybe he does like you, but doesn't know how to handle the escalation beyond friends. But he doesn't seem too shy, so maybe he's just not interested. I'd just lay back, and let him initiate anything more. The ball is in his court after rudely ignoring your message.

It's a good idea to ask him if he received your message though to give him some jolt on the old noggin. Just say it real casually though, like you're just curious and don't care one way or the other.