Ex-h and I have been divorced for 4 years and have two DCS 12 & 10. They see him 2 days a week from school to 9pm and on alternative Fridays and Saturdays each week from school/4pm until 4pm the following day.
However every time ex-h gets a new girlfriend (every 4-6 months on average) he has her at his house (and any DCS she may have) pretty much straight away so during these 4 years there's been quite a few new girlfriends that the DCS have had in their life for a brief time.
They're not happy with this as fed up of someone new being there but also Ex-h tends to put the girlfriend first and not bother with them so much when both they're there and his girlfriend.
It seems to have come to a head now and they are refusing to go up to his house when she's there. This doesn't seem to bother ex-h but the 10 year old is getting very upset that ex-h is making any effort to sort this out, and the 12 year old is saying he hates his dad. I've tried talking to the ex and telling him how upset DC is about this but it doesn't make a difference.
I know there isn't anything I can do but I can't understand why he's ruining his relationship with his DCS. Does anyone have any wise words on how to help DCS with this as I hate to see them upset.