It's a long story, but a month ago I found out her dad has been cheating on me with a coworker. We've been together for 9 years and we have 2 daughters together (3 and 6). Since I caught him and called him out, he's hated my guts. He hardly comes home. One of these coworkers has turned into a "girlfriend". He spends a lot of time at her house. I'm home all day with our girls, and our eldest has been struggling. She misses her dad and she tells me all the time. "Daddy is mad at me and thats why he doesn't come home" or something along those lines. Sometimes she gets really upset and cries. I'll admit that there have been a few slip ups where I dont always speak kindly about her dad, but 98% of the time I speak as kindly as I'm able to. I reassure her that none of this is her fault, and that we don't get along and that I'm the reason he doesn't want to be home. I have never once insinuated to the kids that they hold any responsibility for whats happening. Every time I bring this up to him, he calls me a liar. I tell him that the kids are upset that he's never here and that they're taking it personally, but he doesn't believe me then proceeds to call me names and break me down. Tonight was like most nights. He was at the new girls house after he got angry at me for asking him to stick around here a bit and help me with some things. A few hours later my eldest daughter starts getting upset over something and it turns into "dad hates me!!". I immediately start trying to console her but I also press record on my phone so that I can send him proof of the damage he's doing. It's about a 20 second clip of her crying and being upset about how he always spends time at his "friends" house but never here. I send it to him and he goes absolutely ballistic. He calls me a crazy evil bitch, sadistic, a horrible witch. He says I put these ideas in her head. This is why he doesn't want to be here, because I put ideas in our kids heads. I'm tired of him calling me a liar. He cheated and then just left me here to deal with the aftermath while he gets this fun new girlfriend. I'm on 4 different medications to help me from completely losing my mind. I've had to call a crisis line twice. I'm in such a bad space and he just left me here with the kids with absolutely no support. They have questions and they want answers and I'm trying so hard to handle this with grace but I'm such a mess. It's so unfair that he's not here to answer for his actions and that I'm a "liar" when I tell him whats happening. Then I'm evil and sadistic when I prove it to him. I don't believe I'm evil or sadistic, but maybe I shouldn't have recorded my daughter in such a vulnerable state. I'd never ever share it with anyone else or post it anywhere. I actually deleted it because I don't want to see it again. I think he just needed to see the consequences of his actions that he's trying to hard to deny. So AITA? EDIT: I should have added this but we are very much split up. I'm moving to a new house with the girls on Oct 1. Just another month of this.