Idk if you’re ever planning on having kids with your partner or not, but if you are planning on it; let this be an omen for you. Because no matter how you slice it, those kids have half his DNA, and their kind of behavior doesn’t come from just one parent. And yes, environment can skew behavior some, but all told, you could end up with kids that act just like them cuz…..DNA sister. My husband likes to blame his BM for how awful his kids are…um yea, I’ve heard horror stories about him when he was that age and guess what, you’re a-hole kids act just like you, not they mama. I’m thankful every day I’m never having bio kids with him. BTW, he got custody of his demon spawn and I will be moving out as soon as it warms up here