Is it important??

Not sure what you are asking. In a relationship it is important to give and take. When your friends are having problems they they need to work it out for themselves. Sure do not take sides. Even offer a little advice but they need a counseler to mediate and not really you. I hope all it well and that this is just a what if question.

Depends if one of the parties affected wants you to meddle with their problem. =)