I'm angry with my gf for booking a trip abroad without talking to me about it
She never brought up the trip?
We had talked about it, but I didn't think she would actually go ahead with it.
It sounds like both of you had a failure to communicate. Did you make your views clear on why you didn't want her to go? Have you talked it over since?
She knows I don't want her to go. But I guess she didn't care too much. I've already come to terms with it.
I'm glad that you've come to terms with it, but I understand your frustration. You should talk about to your gf about how her actions made you feel, and try and share with her how you'd like to communicate moving forward so that you don't have to deal with something similar in the future.