He pulls away when we ask him too many questions, but I'm curious and concerned about what might be going on. Kids are changing rapidly at this age, going in new directions and often finding new friends who share their new interests.
Teens also can be fickle and sometimes shut people out in hurtful ways.
It's possible that your son may be protecting himself by pulling away from friends who are engaged in behavior he doesn't like. If his change of friends is accompanied by any of the following signs, I would urge you to talk to a counselor or psychologist at your school. A drop in grades or a marked change in classroom behavior. A loss of interest in activities that normally give him pleasure. Signs of alcohol or drug use.