It’s definitely a weird situation to be in when a peer gets promoted and becomes your boss. Both of you aren’t sure of the dynamics, which could be problematic. But according to this article in Harvard Business Review , it’s important to accept that things will change.
While you might have the advantage of knowing the person, it’s better not to expect anything from them. And instead of becoming the confidante, think about how you can help your new boss ease into their role. Once you’ve put yourself in their shoes it will become easier to climb the ladder called success!