Is it premature ejaculation????

OMG!?! ? why it that some guys cum so quick? I really don't know... I've been going out with this really cute boy. We've been seeing each other for a couple of weeks, and I had sex with him for the first time last night. I don't know what's the matter with him? After about 2 minutes after he penetrated inside me he came inside me. Is that normal for a guy to do that? He told me that I just really excite him and he can't control himself. Today we were fooling around, kissing and stuff and I know that just from that he was really hard and I'm sure that I made him cum in his pants without even touching it. I know that he did, cause he started grinding into me and breathing really hard. I could tell that he came, and I think that he's really embarrassed about it. Am I doing something wrong? I don't know why, other guys that I've been with don't really cum that quickly. I don't know what to do?