OP, do you get a lot of phone calls from guys? Are most of your friends dudes? That can make even a normal guy a little concerned, because guys know how other guys think about women. If you are reasonably attractive, then most of your guy friends want to bang you, and some of them may be actively working towards that under the guise of a fake friendship. Women can be really naive about their guy friends.
On the other hand, if these calls are uncommon and you have plenty of female friends too, then your guy probably is a control freak. Don't let him chase your friends off. But if you want to make this relationship (or any future relationship) last, make sure that you aren't placing your guy friends equal to or above your boyfriend.
Good decisions come from experience. Experience comes from bad decisions.