| The first thing that you should do is care.
It should matter if you care about his feelings. You did say that you like your boyfriend a lot. I would assume that you also care about what he feels as being a part of liking him a lot. Part of being in and maintaining a successful relationship is about caring about what each other thinks and feels.
If he did not want to go out because he said that he was mad at the other people, then I would suggest that what you might have considered doing, is seeing if it was okay with him for you to go and hang out with him without there being other people around so that you could discuss the situation about which he was feeling badly.
What I would do at this point, is call him and set up a time to discuss how he is feeling. It would show that you really care about him. |