My girlfriend has an almost lifelong male friend. I was okay with this when we first started dating, and until now I’ve had nothing to worry about. That is, until last night. She told me he said he loves her. I enquired further and she said her response to him was they would never be anything but friends. Should I be worried? What should I do?
This is not a situation that you should worry about. Everything in life brings you to a crossroads, and clearly your girlfriend has reached those crossroads and chosen your destination instead of her friends. Jealousy will only cause you to waste energy. Love her and accept her as much as she loves and accepts you, or look for an accepting community that will help you find your own sense of self.