Most Helpful Girl
It sounds like he really likes you, but the fact that he has a girlfriend puts you in a tough situation. He's totally leading you on, but nothing can happen cause he has a girlfriend. He could be being extra flirty with you because he knows that if he breaks up with his girlfriend, you'd still be there. I think you definitely have a chance with him, but because he's taken, nothing can happen at the moment between you two. And to answer your question: "why will he glance at me sometimes but not talk to me?," he's likely doing this because he's playing hard to get, so that means he probably likes you. If he becomes single in the near future, go for it! Life's to short to not take chances. Good luck!