AIBU to confront my partner about joining a football team that plays a competitive match every Sunday at 4pm? I feel it now puts Sunday 'on the clock' and means we can't really have a full day out as a family like we used to (we have two young kids aged 6 and 9). I thought we had a unwritten rule that weekends are sacred family time while the children are young but my partner has now unilaterally decided to take time out for themselves and break this arrangement. They say the Sunday match is non-negotiable and seem to take it for granted that I'll look after the kids between 3 and 6 every Sunday. Any thoughts on how I should best handle this (we've already unfortunately had a bust up!).