My (45M) girlfriend Tara (44F) and I have been together for almost two years. She has a son, Ethan (17M). I get along with him fine, but we’re not super close. His dad isn’t really in the picture. Our 2-year anniversary is next week and I planned a trip for the three of us to Disneyland. I talked to Tara about it before buying anything, it wasn’t meant to be a surprise. I didn’t talk to Ethan directly, but I assumed Tara would let him know. I paid for everything. I booked the trip so we’d be back before school starts, but Ethan wasn’t happy. Apparently, seniors have a bunch of non-school events the week before classes, and he really didn’t want to miss them. Tara didn’t feel comfortable leaving him home alone for several days and said there was no one else who could stay with him. So she told me I couldn’t go with them. At first, I was going to cancel and try to get some of my money back, but then I thought about it and felt like that wasn’t fair to me. I’d been looking forward to this. So I decided to just go by myself. When I told Tara, she got pretty upset and said it felt wrong for me to go on what was supposed to be our anniversary trip alone. Since then, she has been cold and distant. I am supposed to leave tomorrow, but now I’m worried this might ruin our relationship.