Men don't like the horror that goes on when they reject a woman. She wants to know why, crys, trows stuff, can be dangerous. Men will often avoid this in a very shameful and cowardly way. Takes a real man to face a woman when their life turns upside down and when you are breaking up you are done with them and don't care what they are going thru. You cannot comfort them because you are what is causing the pain. Many men feel it is better if they dump from a distance.
You need to let him go and stop letting him jerk your heartstrings.
Sometimes, things just happen and there is no explanation.