Quote from Rachel in The One with Monica's Thunder
Rachel: Look, I am so, so happy for you guys. But you getting married just reminds me of the fact that I'm not. I'm not even close. And I don't know, maybe I just wanted to make myself feel better. And I know that that's dumb, but, oh, my God, you were so depressed when Ross got married that you slept with Chandler. Chandler: I don't care, she slept with me.