Nowhere does it say the BF just found out he has cancer.

Me and some friends went on a road trip vacation for a few days and just came back yesterday. It was originally my idea and meant to be a girls trip, but then we decided to include our SOs as well and make it a full party weekend. This vacation was a long time planning and I was really looking forward to it, as have the others. A few weeks ago my bf said that he doesn't really want to go. I tried to convince him otherwise because our hotel, activities etc were already booked but he wouldn't budge, and said that some of them still have free cancellation and he'd pay for the ones that don't. Okay, his choice, I was still planning to go with my friends. My bf however started saying that I shouldn't go either and stay with him for support and so he isn't alone. I told him that I've really been looking forward to this trip and if he's not going, that's fine but I still want to. We had a bit of an argument over this, and I ended up going, I had a great time. Since I've come back though, my bf's been giving me the cold shoulder. So, AITA for going on the trip without him?