Most Helpful Guy
That was very courageous of you to ask for his number! You got guts, girl! And guts are really sexy. If this guy doesn't see that, don't worry. Another guy will.
If you want to know if he likes you, you need to open up a little. By open up, I mean that you should smile and say hi when you see him, Do that for like a week, maybe two, and see how he responds. Does he warm up to you? If that goes well, then move on to small talk, and see how that goes!