What if your friend has a problem with another kid?

A little more info would be helpful but I think that if you are both young, like me then you should talk to each one of them privately, and see why they have a problem. It may be something easy to resolve, or maybe it is more complex, either way I'm sure that you know who your real friend is, so if a choice has to made I would choose the one you are closer to. You could also tell your friend how you feel about the continuing problem between him/her and that other person.