Dp and I live together with my son. He has got 2 girls who stay with u s regularly. He is off work for the summer and thus providing the childcare for me and his ex.
Today he has decided to look after the children at his ex's flat (also his old home where they lived together for 13 years)
AIBU to be upset and think that this is inappropriate? I have already told him how uncomfortable their closeness makes me as he has a history of going back to her time and again