Give him a chance. As PB said, communication is important... nay, the most important aspect of a relationship. To break up with him now (as was suggested by your mom) would be wrong, considering chances are he would have no clue as to why you would do that, and it would just make things more complicated. Just talk it out with him, I'm sure there's a good reason. Lack of communication is oftentimes a big problem, so yeah... talk with him first before you do anything.