My ex and I were in a long distance relationship and went to different colleges. He met a few of my friends when he came to visit but it was a very brief encounter, less than 5 minutes, and he followed them on social media. Since the breakup, he has blocked me on every social media platform but still continues to follow my close friends even though he only met them the one time. He also removed my best friend from following him, but he still follows her. He doesn't like their pictures, and some of them post with me often. Is he trying to keep tabs on me or just following them to follow?