DH's DD and family are over from Germany and visiting us this week. I have planned meals and bought extra food for the next few days. I just noticed that DD has opened packets of cold meat I had intended to be eaten this week. One was ham, which I normally buy, but there was already some in the fridge which needed eating. The other was cold chicken, which I don't normally buy. He doesn't think he has done anything wrong. He says he didn't see the old ham, and he thought I had bought the chicken for myself ( I don't eat ham). I would have thought it was obvious that I had bought extra food, some of which I don't usually buy, for his DSD and family, which shouldn't be opened yet. AIBU?