Hi everyone.

I would really appreciate some feedback or advice

I have been with my partner for 1.5 years. He has 3 kids with ex-wife. From the beginning him and his
family told me how horrible narcissistic she is.
She moved far away and left him alone with kids.

She made her son so anxious to be around me. She sends me rude texts warning not to interact with kids or buy them anything.

She visited them 4 times and stayed in his house and he then came and stayed with me.

He posted a photo of us on FB and she lost it. She was so angry she stopped paying child support.

What frustrates me is that he never say anything to her. There is no boundaries. He just want to keep the peace.