Does he like me? Options

[cloudcandy]

There's this guy that was in my class and i noticed that he has been staring at me since April..one time we were in the computer lab and i was fixing my hair in the computer screen and i just randomly glanced over to where he was and he was staring at me...then at the end of class, i went to him to ask him about the history essay and before he answered, he took a deep breath like he was shocked or something then he explained it to me in full detail.In late May, i started to like him so i told him and he said that he had a girlfriend. But after he told me that, he would still stare at me..then when i catch him, he would pretend that he was looking somewhere else...he even tried to start a conversation with me on msn but i wasn't at my computer..i'm so confused..does he like me?