New partner

[mumsof3]

My children's dad has a new partner, he has introduced her to the 3 year old but not to the elder ones(11&13).
Do I tell the children their dad has a new friend? I don't want them finding out through their younger sibling or hearing it from someone other than me or their dad.
My eldest doesn't have a very good relationship with her dad and he doesn't try hard enough for a relationship to rebuild(in my opinion)but I don't want it to go back to where it once was as it is a lot better now than it was.
I am not in a position to ask regarding new partner due to Court order's so I have no contact with him other than a letter stating dates he wants them.

I’d try to get a few more details - social media, family, mutual friends etc if you aren’t allowed to ask him directly, so you are ready if your children have any questions.

Apart from that, I think I’d just share it with the older two as general family chat over a meal.
“Child A says daddy has a new girlfriend who likes yoga/baking/cycling whatever. That’s nice for him isn’t it”

Keep it really casual but avoids them feeling left out.

Thank you, my only worry is if he says i shouldn't of told them and it is his place, which it is but I know my eldest wouldn't take it well if she heard off other people.