Guy troubles

Why does it always happen that when I start to like a guy and start to try to get close to him, he immediately starts to back away. That happened today. I like this guy in my youth group named TJ. He is a supper nice guy and is always into people and cares about them and I thought he was starting to like me. But today when I was going to give his a ride home he called his mother and got picked up by her. The worst part was I was going to basakwardly ask for his phone number today. 

Also he was supper distant from me all day when we hung out with the student servantship team today. I don't know maybe I'm just putting to much in to all of this and I should just stop and just get on with my life. Or should I go after it? I have no clue. 

Hopefully this will all work itself out by the next time I see him. I just am confused and hope that maybe he likes me to because I kind of want to ask him to Prom this year but I don't want him to say no or it to be awkward between us afterwards. Gosh. I guess I'll just have to leave in Gods hand and hope for the best.