@Sadie113 , I hope you don't mind but I've slightly edited your OP. Feel free to tell me if I've changed the meaning. I've done it to try and make sense of it.
I don't know if I'm being unreasonable but few weeks ago i was called a liar about being abused in a relationship.
Should I call it grabbing my collar and being in my face? Don't know if that is abusive or not but that person's sister said i was a liar and making up lies so I cut off all contact, and being abused as a child sexually and having to fight with my own demons i didn't expect to get called a liar about something that recently happened to me as an adult in a committed relationship with someone I have 2 kids with.
I had told him that, because I was made out to be a liar, I want nothing to do with his sister. I don't want my kids to have anything to do with her, as tomorrow she could turn around and say my kids are telling lies should, god forbid, anything like that happen to them.
My mother in law then came up 2 days before Christmas and decided to allow my kids to have a conversation with the sister who accused me of being a liar. He did nothing about it and broke my trust and went far beyond my boundaries.
I feel like our Christmas got ruined. I still ended up trying to make it up to my partner by cuddling him while he had no care in the world. If that was the other way about how he would feel today? We're on breaking up point and I really don't know if this is all my fault.