I have agreed with my friend to go on a trip, but now I don’t want to go with her. I want to go with my boyfriend. What should I do?

Just say that I can’t go because I have something to do. You can only let go of the panic first, it's okay, even if she knows, she won't blame you. After all, your boyfriend is more important. However, you should pay attention next time. You don’t have to stick with your boyfriend every day. You need to maintain an appropriate amount of space so that you don’t feel bored. And next time you agree to someone else, don’t always regret it.