A guy and I dated for a little bit last semester but we broke up because our hometowns are 4 hours away from each other and he doesn't like distance. So we broke it off and I told him I did not want to hear from him because all he did was play games with me, so I did not hear from him for a month and he could not resist not talking to me, because he missed me. We talked over the summer pretty much, but the thing is that I was dating someone else for about 2 of the 3 months. When we finally saw each other after around 2 months or so we barely talked to each other like it was awkward and once the semester started we did not talk to each other at all and I have not hung out with all semester. Of course he will say hi like randomly but has only happened once or twice so far. Like recently at an event we were working at, we checked in around the same time and we had to get our name tags. As I was checking in, he got me my name tag after that, and when I was talking to some people I just happened to see him right behind me talking to another person. I have lost all of my friends since I broke up with him because he was originally friends with them but at the event this weekend I was actually talking to other people so it felt great for once. Any idea why he is being nicer?