My exHs girlfriend is pregnant. I guessed several months ago when our dd was moved out of the bedroom next to his against her wishes yet still my ex has not actually told me. I have had another child since we separated and ensured I told him rather than him hearing it from someone else as obviously having a sibling is a big deal for our daughter. AIBU to think that exH should have told my daughter and I? She found out yesterday when her old bedroom was left unlocked and saw a cot etc in there. Girlfriend is at least 5 months pregnant so not waiting for the 3 month thing.