I separated from my husband a year ago. We have two kids who live equal amount of time with each of us. Some years ago, we became good friends with the parents of our son’s best friend. (Let’s call them Cath and Dan). While my ex and I were still together it was Cath and I who had the strongest friendship. But since we split, Dan and my ex have become very good friends and spend a lot of time together in evenings and weekends. I know this because my son will often mention that they are invited round for dinner together and sometimes when I drop him off my ex is there. I have not been invited to Cath and Dan's since my ex and I split up, and they haven't taken up any invites to come to mine. I was initially a bit hurt by this clear preference for my ex, but understand that is the way things go sometimes when relationships end. However Cath is trying to keep the friendship going, but by making suggestions to meet for coffee during the working day. I work full time, so this is really difficult for me. I can see that weekends and evenings are hard for her as she prioritise what her husband wants at this time, but I do feel that if she is unable to prioritise seeing me one weekend or evening every few months that I’d prefer to let the friendship slide gracefully away rather than put myself out trying to take time off work to see someone who won’t put herself out to see me at a time that works for me. AIBU?