Crazy or what…denial

Its been about 2 years since my ex and I split. I let him jotI am not interested in a relationship as I was dealing with my myself and getting my mind right. We got together during a very rough time in my life and write frankly I think he took advantage of that. He is a cool person, but I truly don’t see him as a romantic partner for me and after our turmoil(he made me feel 2nd and even hing with an ex in secret… w/ drinks in an intimate setting bc its routine for them) i saw its is clear he isn’t right for me.I let him know that and that we may remain cordial. I let him now any advances makes me uncomfortable and I will have to cease our convo if he does not stop. Early on bc it makes me cringe I stated that he cannot call my children “his babies” as they have a dad and we are nowhere near that level… we were together about 8 month to were I bore much of the financial burden and when he stayed locally I paid for the room. My child was sick so I stayed hole with her. During that visit I found out he was trying hook up with an old classmate in the city. He was never wanting to address many of our issues which is another problem of mine. As of now I let him know I am involved w/ someone…but didnt tell him ton the degree of having his child. He was upset but came back and started his pursuit after I made it clear I dont see us. This is his text as of today

I try to be cautious w/ peoples feeling but at this point he has disregarded what I asked of him completely as well as my current relationship.

I can either block him or make it clear one last time.