Complex sentence: J.P. also seems to have a hidden fear of being alone--despite being constantly surrounded by people when he was in the Real World, he felt that he had never really been anyone's real friend, which spawned some rather obnoxious behavior in the beginning.
Split into simpler sentences: J.P. also seems to have a hidden fear of being alone, despite being constantly surrounded by people. When he was in the Real World, he felt that he had never really been anyone's real friend, which spawned some rather obnoxious behavior in the beginning.