Just that really. We still live together, and ex has a new girlfriend, been seeing her for 4 months, and he normally does the school run, but today I went with him because it was DDs first day at school. We were just talking, and he told me he's taken his girlfriend to the school a few times when dropping DS off, she works nearby.
I don't know why I feel upset, but AIBU?
( he's moving out in two weeks time)