What he is doing is an attempt at subtle manipulation, he is trying to instill doubt in you. This doubt in his mind will give him the opening to later fall for his routine once more. Your best bet is to cease all comunication with him. Set your email to block any further messages. IF he mails you anything just mark it "return to sender" and never open it. In time he will get the message the you do not want him in your life.

Best of luck and I hope this helps

TJ