I made the very difficult decision to end my marriage back in early December, we didn't officially tell anyone until after Christmas and spent it together for the children.
Dh has yet to move out as we need to sell the house first and have 3 young children.
2 weeks after we split he met someone else and they've been inseparable ever since, that's not my business but less than 2 months after we separated and before he's even moved out as he's got nowhere to go and he has no intention of going anywhere until the house is sold, he's introduced his new woman to the children already who have actually coped really well with everything that's going on.
I didn't know until they got home that they'd spent the day together and apparently went back to his parents for dinner.
I chose to end this marriage and I knew at one point or another there'd be new relationships for both of us but I don't think it is appropriate to weave this woman in so soon when he only has them alone on a Saturday because I work and rarely sees them in the week because he works all week and is with his new woman every evening so the children don't see a lot of him and already have so much change to adapt to.
I could never introduce someone so soon and think it's really inappropriate that he has.