Boy problems.....

Me and my boyfriend recently broke up. The night he broke up with me he was with all of his friends, and right after he broke up with me all his friends posted on their Snapchat a picture of my ex and telling people to HMU because he is single. Do you think that his friends had something to do with him breaking up with me or what?? And he always acts different around his friends like he was embarrassed of me or something. I still really like him should I just forget about him ?