“That’s a crazy reason. The truth is more likely that there is same reason, but he’s too asdfadsf ”

That's a crazy reason. The truth is more likely that there is same reason, but he's too scaredy-cat to tell you. It might be that he sees some flaw in you (real or imagined) or it might be he's found new love or just too unstable to accept happiness. Either way, don't mope idly. Find new people to date & you'll feel better soon.