the boyfriend I moved away from

This was a conversation from earlier when I confronted my boyfriend I had to leave from so much mental abuse it wasn't even funny, he has an ex he "accidentally " (what he says) had two kids with and used them against me our entire relationship then him and I had a son a year later , I moved out for the 4 time recently and this is the longest I've stayed gone because I also have a daughter from a previous who I'm trying to not screw ups mind as a child...anyway I confronted him because she all the sudden stopped talking to him a few months ago and I always felt he talked to her behind my back ...and since I moved out all of the sudden he never sees or hears about his other kids, (conveniently after I leave) and supposedly he got out of paying child support for those kids also..so he wants me to believe she is by no means contacting him or they somehow have some deal behind my back and when I confronted him this is how he treated me...after I blocked him he continued to email me and even sent me a photo where he had changed my name to "side piece" than continued on to try to tell me he loves me...I fucking cannot deal...what the hell do I do!! This same thing keeps happening ...