You don't HAVE to talk to him or text him back every time. There is no point in trying to make sense of anything they say or do. If you continue to have regular contact with him he will think that he can come back. My ex moved out the furniture we agreed on but then tried to leave all his clothes and personal items (I threw them in bags and made him take them). I wish I could do no contact but we have a 14 year old son. My ESH is to just discuss just what is necessary and nothing else.