Partner’s behaviour

I’m in live in relationship for 8 years now, I have 2 adult kids from past marriage,they are settled. One small kid is with me. My partner’s family knows us as married but my family knows we’re in live in. His parents have passed away . In 2020 his mother shifted with us ,she was sick , I took care of her so much but that time my partner isolated me,he stopped behaving like my husband my kid father. He stopped caring loving trusting and taking me for 6 months,but I didn’t say anything because it was his mother. When she died he started going on silent mode for 1-2 months without saying a word, I adjusted that also. But somehow life was ok when he was in talking mode . We were living almost happily.

But in last December 2025, suddenly he told me that his sister 45 years old who has psychiatric conditions is coming to live with us on 30 December 2025. He asked me to support her and taking care of her.

I got shocked, it was like an attack on me. I told him that you didn’t talk about it with me before! He told me that it has decided suddenly!!! I told him that I can’t do caretaking but I will support you if you will be standing beside me as my husband and as father with my kid. I share with him my hurt from his mother’s time also . I told him that I don’t want to be treated like before. He was agreed.

But from next day he went on silent avoidant mode with me and my kid.

After arriving his mental issue sister, along with his married sister and his cousin, he became defensive aggressive also. He almost forgot me and kid. His married sister and cousin also came to my house without informing me .

I felt so much disrespected, neglected, left out, unimportant, avoided, isolated ,which is continuing till now.

His cousin, married sister stayed for a month here, I didn’t do guest hosting this time. I was continuing with my daily routine of mine and kid.

His married sister asked me to do his mental sister’s daily routine things but I denied it by saying that I have my small kid to be taking care of, you have to hire a maid for all these. I can’t do it.

after leaving my house his cousin and married sister , my partner became more aggressive (verbal) passive defensive avoiding towards me and my kid.

I begged him to rebuild our relationship many times but he never came back as husband and father.

I became icy, more strong bounded with boundaries,

He sees everything of my house structure as tortures to his mental issue sister. He has problems in every thing which I fix in home .

but I didn’t bend over his blames insults and disrespectful behaviour towards me.

My kid started psycho therapy,me also.

My partner is the same avoiding silence defensive passive aggressive blaming insulting.

I stopped begging for our relationship now , I’m taking care of myself and my kid.

My actual problem is that he brought his psychiatrist issued sister without my consent and after that he started behaving as narcissist and totally disrespectful.