So I guess I get to become the bitchy BM now.
I just sent my two dds to their dad's for the summer last week. I get an excited message from them saying "Dad has a girlfriend!" Oh and she is super-nice. Oh and she lives on a ranch. Oh and she has horses. Oh and we got to ride her quad. Oh she has a motorcycle like dad's. So I decide to be the grown up and tell them "how nice" when I am seething because this is the Dad who has NEVER paid a dime to support them since we separated and divorced (he just stays unemployed and living off people). He is perfectly happy to let FDH support the girls (even to the point of expectation; "oh well he has money so why doesn't he pay for XXX"). He NEVER calls to see how they are doing, I'm always the one contacting him. Now he and his GF are playing Super-parents.
The girls NEVER talk about FDH to their dad because he gets all huffy but I've always had a great open relationship with them. I suppose they feel comfortable telling me about this wonderful new girlfriend. Maybe she really is a nice person. However, it's hard to let go of baggage and not be pissy.