I recently flew out to visit my boyfriend at his older sister’s house. My flight was delayed four hours, and the airline lost my luggage. By the time I got to the house, I just wanted to take a shower and get clean. The guest bathroom had a pretty arrangement of toiletries (minisoap, shampoos, etc.) and fluffy towels right by the bath. I used them without thinking, just like I borrowed a shirt and a toothbrush from my boyfriend. The next day, my boyfriend’s sister drove me back to the airport and lectured me, saying I should have asked for shampoo and conditioner from her and not used the fancy ones in the bathroom. She said she has to order them online and it was very rude of me. I felt like a 6-year-old getting lectured for having an “accident.” My boyfriend and I got back home, but this situation still bothers me. I haven’t told my boyfriend because I didn’t want to cause trouble, but we are going back to his sister’s for the holidays. Did I do something wrong here? His sister lives in the Deep South, while we live on the coast. I have never stayed at anyone’s house except for a few slumber parties as a kid.