DPs Dad has a key to our house for emergencies (left the iron on type thing etc). I'm pregnant at the mo so nap a lot during the day on weekends. I knew he was coming over later but DP is out and told him he would let him know when he got in. I've just woken up and DPs Dad is in the house! Just let himself in!! Had I not heard him I could've walked downstairs in my pants which I regularly do as I don't expect to have people in the house and not know about it! AIBU to think that DP needs to have a word with him?! He's done it three times now and it's doing my head in. It's my home, I expect privacy and I expect people to knock!!