Long story which I will try to summarise. H is on the verge of leaving. He wants to spend more time with OW. She is childless and lives alone, and wants him to move in with her, although he seems less sure. What IS sure is that our marriage is now beyond repair, so he fancies his chances of happiness to be greater with OW than with us.
I am distraught at the effect this will have on our kids (DD1 - 9 years; DD2 - 9 months), as we have not been in a high conflict household and it will come as a huge shock to DD1. Our marriage was pretty sound before OW came on the scene. But it's been dragging on for nearly a year; I have already done a lot of the grieving for our marriage and am shored up by friends and family and ready for him to go. But I cannot get my head around the fact that I will ultimately have to hand my kids over to the 'care' of the OW, who clearly doesn't give a shit about their best interests, and as far as I'm concerned is selfish, manipulative, and evil personified.
I am trying to find the middle ground between being civil for kids' sake, but not too doormatty for my own sake. We have both agreed that we will try to do this in the least damaging way for the kids. But that's where the problems start... I showed him the child-centred stuff I've been reading, which has in black and white the things I'd been wondering about for ages:
i.e. (paraphrased)
Present the split to kids with minimal blame
Don't introduce new partners until kids have dealt with separation
Definitely don't move straight in with OW; the kids will hate her
And now we are both paralysed with indecision...
I want to keep the kids away from OW for as long as I reasonably can, and am prepared to have H having contact visits in our home, at least initially. (I would go out. There will also be some times when I will be out at work in the evenings and would need a babysitter if H is not willing).
H also seems to think that he can treat the kids differently because of their age gap, (e.g. eventually wants DD1 for overnight contact but not DD2); I disagree and say they need to be treated fairly, therefore they come as a package or not at all, and we will need to find a compromise arrangement for contact that suits both of their needs.
Please help me by sharing your stories of similar situations, and advising me of benefits and pitfalls of particular arrangements.