I think this situation is ok but I may have lost sight of things a bit. I am still very close to my xh's mum. I've seen her through the death of her husband earlier this year and support her a lot now too. her sons don't live locally so she only has me really. I've received an invite from xh's brother and his wife to go to their anniversary party. xh's partner has made a couple of comments to my dd (grown up) about me being around for xh mum and saying it's a bit weird. my dd was not impressed! now I'm thinking that maybe it is weird if I go and that I may be stepping on people's toes perhaps. not really sure what to do.