DS and DD are in their 20s - both happy with hobbies, jobs etc.
XP and I split up 10 years ago but he kept in contact and saw them every couple of weeks. Contact has ceased over past year as all he wanted to do was invite them round to his house where he now lives with new partner (seems nice enough) and put on a show for her as to what a great DF he was. (In fact he's below average). DC felt used and stopped visiting or contacting him and there's been no contact between them for almost a year. They liked his new partner and she seemed to like them.
I used to speak to XP on the phone fairly regularly about issues with the DC but this lessened as they got older. When he got with new partner he became quite off hand with me and clearly didn't want any contact which I think is silly but I'm not upset about it. However I rang him a few months ago and suggested he get in touch with DC - he said why should he when they don't bother to contact him.
DC seem okay with the lack of contact but I know they're hurt that he no longer seems to care or want them in his life unless its for purposes of making him look good in front of his new partner.
Not sure whether I should be trying to get them back together or to stay out of it. They say they're not bothered as he was never around much previously. Anyone else experienced anything like this?