I broke up with a guy who I dated on and off for 3-4 years after I figured out he was a chronic liar and cheater. I told him I no longer wanted to have anything to do with him, but he won't stop texting or calling me.

It's been 18 months, and he still texts ("hey", "how you doing", "can you talk to me") and calls me (but never leaves a message) almost every day even though I have not responded to him at all since I ended things. I've blocked him most of this time, but out of curiosity, I unblocked him just to see if he is still at it, and he is! I haven't seen or communicated with him for a year and half and he's still acting like everything is normal.

I blocked him again now, but I am just really curious -- what the hell is going on with this guy?