Most Helpful Guy
You or he need to figure out what is causing him to become distant. Depression and various substance use are two things that come to mind. I have something which makes me appear more unstable from time to time. I have a sleep issue and at times I'll go days where I can hardly think. Another one although less likely is diabetes if he has too much insulin.
Most Helpful Girl
Sounds like it. Once you break up a first time, it becomes easier to break up a 2nd, 3rd, 4th, 5th time. You guys broke up for a reason in the first place. Dump him and move on... unless of course you have time for his mind games.