[quote Almostmenopausal]**@Away77 I'm obviously in the minority here but I fully agree with you, OP. I wouldn't be allowing it either. If he can date somebody young enough to be his child then he's clearly not thinking straight/sensibly so no, I wouldn't be trusting his judgement. Just because his bits helped create the children, doesn't mean he knows what's best for them! None of us know him - Only OP does. There's obviously something causing the doubt in OP's mind that is niggling and as their mother, this should be respected. Also, OP has mentioned that he was abusive & a narcissist but of course the virtue signallers have quietly ignored that.....
Thankfully I'll never be in this position with my DC. However if I was, I'd fully agree with OP's position on this. It always shocks me how some mothers are expected to blindly trust some woman their ex chose to be in their lives - even if that man was abusive! And yes, of course same applies both ways..... [/quote]
@Almostmenopausal you're forgetting that the children are not possessions that @Away77 owns. The children are just as much his as they are hers and she's the one who freely chose to have kids with him. Whether it's wrong or right that he introduces them to the girlfriend is irrelevant because it's not her decision to make. I bet she's not going to be asking her ex when she can introduce a boyfriend into their children's lives if she starts dating again in the future!
Divorce is understandably painful for the OP and she sounds jealous that he's with a much younger woman. Most women certainly wouldn't like a new woman in their children's lives but if you choose to divorce you've got to face the consequences that come with destroying your original family unit. It's horribly unfair of her to use the kids in this way.
She has to act like an adult and not start this drama because at the end of the day it only damages the children themselves because they'll be able to sense the stirring up of animosity she will create with their dad (and this woman).
Children will feel horrible because they will get entangled into an adult's emotions (hers) and start to feel responsible for it. They have no control over who their dad dates and despite his apparent bad behaviour, will naturally love their dad and want to spend time with him without worrying how to manage the bad atmosphere their mum is creating for them. The divorce isn't their fault and the poor kids have suffered enough.