Boyfriend got mad when a girl hugged me, what do I do?

It's probably best to ask him why he got mad and make sure you get an actual answer. Your relationship to the one who hugged you may also have affected this if you two were close

Nothing as far as I can tell I’m guessing you have his number even if he doesn’t respond there’s a high chance he will see it. Though if I may ask did you know the girl? And I don’t want to assume but what is you sexuality? Depending on your answers it could show why he’s upset but it’s not your fault. Sorry if that last one came across as offensive if it did I’m truly sorry and you do have a right to ignore them. The reason I asked was to get more information to decide better.