My DH and I invited friend over for dinner last week. My friend is in early stages of pregnancy and her partner was driving so neither were drinking. We provided nibbles, food and dessert along with a few bottles of flavoured sparkling water, whilst we, DH and I, shared a bottle of red. AIBU to be offended that they didn't bring a bottle of wine with them as a thank you? Personally, I'd never go to a dinner party without a bottle (or two) for the host, regardless if I was having a drink or not.