My ex & I have 3 daughters, 2 are now adults & youngest is 15 & since she was 11 has lived with her Father & SM. We divorced many years ago & have both remarried, I chose not to have any more children but ex has 2 daughters with his now wife & she has a 2 sons from a previous relationship her ex & my ex are fairly good friends as they used yo work together & I know that my ex & his wife socialise with her ex & his now wife sometimes. I’ve found out from my oldest daughter that in 2 weeks a big family holiday abroad is booked for 2 weeks which includes my ex his & his wife and all 3 of out daughters & their partners & children plus her ex his wife & their kids & 2 of my close friends and their families. Although I don’t have any right to be included I feel really hurt that not only was I not told but wasn’t invite. My ex & I get on very well & I have a good relationship with his wife (absolutely no animosity anywhere) . I haven’t said anything yet because usually my ex lets me know before they go away so I expect I’ll hear imminently but I feel so upset that I was excluded but feel silly saying so to my ex as he may not have even thought about it.