Oh My..
Ya know, Im new to this forum, but I am an ex wife.
My ex has a new wife with 4 little ones, she tried that same crap o'la,
with me, regarding child support, cant get far enough away. etc. etc.
You can never run from your problems...
Stop Moving!
And for you to consider, his children possibly a problem is wrong.
Sounds like a jealous New Wife to me!
If he is mentioning her name all the time, talk to him about it, let him know you only want to discuss children...get some counseling for self esteem.
Please dont be one of those wifes so jealous, she has to keep the kids away from there daddy. Ive been through that, its not the ex that looks bad, people can see through it.
Settle down somewhere, make a life, if ex is so willing to bring children around, and she is not causing you physical or mental or emotional problems, let her.
He is married to you...You are the only one standing in the way, of having a life with him.