Do guys keep their distance if they like a girl, because they don't want to fall in the "just friends" category?

This guy a lot older then me asked me to go out to listen to him play. (I was not the only one) but I had to leave and he stopped me we talked he was play punching and quoting things I said on my face book page. I have this thing when I meet people I watch the body language. I guess I was doing it to him and I realized it was very obvious! Oops! But he asked me if would be going to the next gig!

But when I sent him PMsge on Face book to apologize for my tiredness (forgot to introduce him to my friend) he didn't respond! Is he trying to not fall into the "just friends" category why he doesn't respond or he does have an interest or am I just reading to much into it?
Do guys keep their distance if they like a girl, because they don't want to fall in the "just friends" category?
Post Opinion