I think my boyfriend is going to dump me?

So my boyfriend and I have been seeing each other for 4 months now. Lately, however he has seemed distant, yet his family and friends say he talks about me all the time. He apologizes if he is busy, but then acts differently when he's around me than before. He still hugs me and kisses me goodbye, but he doesn't hold me while we're together like he used to. He still invites me over to his house and we still talk, but he seems like he is almost a different person. please help! What can I say or do to see what's going on? I want to know if its over or if there is some other reason for him to be acting like he has been.

I talked to him. we got things out in the open and straightened out. Thank you!