My ex and I share a daughter and although we're no longer together, we still do "family" outings every now and again which our daughter loves. My ex text yesterday to ask if we would like to come to a Christmas event next week, along with some of his extended family so that our daughter can meet some of her cousins she hasn't met yet. I said yes and didn't think anything else of it.
Hours later ex texts again and asks if I've managed to book tickets. I replied with 'no, I thought you were booking them'. He then tells me that he doesn't have the money to pay for the tickets at the moment and asks if I can pay. The tickets are very expensive and I don't want to pay. AIBU to think that since he invited us he should pay? I have no issue covering my own ticket but think he should pay for his and daughters ticket.