The constant fighting was unsustainable. He made me an enemy. He would avoid both me and the children, locking himself away to play video games for hours. When he did emerge, he would yell at me and the children, sometimes even lunging at the older child so that she would cower in fear. The final betrayal? A day after being intimate, without a single word as to his intentions, he lost his mind and suddenly moved out four weeks ago into his new apartment. Less than a week later, he started having a physical relationship with a female he met on Hinge in his den of sin. He had the audacity to bring my kids around this amoral female who knew that he was still married when they made the very deliberate decision to begin fornicating like pigs (she herself stows her own two piglets with the neighbors when she decides to hook up with random men). He could not have a chosen a more pitiful, easy female: the father of her children is now in prison for abusing her and her kids. It tracks that he, an abuser, would be so attracted to a broken, abused, easy to manipulate shadow of a  human being. And then he has the gall to keep whatever ongoing torid affair with her fresh and alive and then come knocking on my door saying that he misses me and wants to move back. He has the absolute Chutzpah so say that she is so kind and that he is conflicted over 3 weeks of her magical vagina versus sixteen years of marriage he had with me. This is absolute manipulation, abuse, and cruelty on his part to try to string along two women at the same time. I've been cheated on before and I was able to walk away clean because there were no kids. This with this personality disorder-ridden, insecure narcissistic sociopath of a human being is messy because now there are children involved. This is going to be a year-long process of attempting to excise him out of my life legally. And then because of the presence of children, he will continue to peek-a-boo into my life unbidden and uninvited like a terrible invasive vermin. And all in the midst of graduate school he blows everything up because he is selfish, skulking away to foreign women like a drug addict seeking his next dopamine hit. He is coated in other worldly sin and should be cast out of this world. The ground should open up and swallow him for what he has done and continues to do. I want nothing to do with him. There is no fix, no forgiveness, no going back to how things were. I am reminded of Shakespeare's Macbeth in which Lady Macbeth says, "I am in blood / Stepped in so far that, should I wade no more, / Returning were as tedious as go o'er." It is done.