I dated him for a month (wasn't really serious) but somehow it ended badly and I caught more feelings for him and I begged him to come back by the end but he didn't come back. After he rejected me, I posted many party pictures and happy pictures to indicate that I was moving on (I still couldn't get over him tho). He liked all those pics and I didn't like his pics on insta, and I didn't contact him for 3 months. But suddenly, he unfollowed me today. I know for sure that he doesn't have any girls right now cuz my friends know him. I haven't posted anything in like 3 weeks and he just unfollowed me out of no where. Why do guys do that? And How can I get him back?