Quote from Monica in The One Where Rachel Finds Out
Monica: You know, the best part is you already know all about him. It'll be like starting on the 1 5th date. Phoebe: But it would be like starting on the 15th date. Monica: Another good point. Phoebe: No, no, I mean, when you're on the 15th date, you're already in a very "relationship-y" place, you know. And you're committed. Well then what happens if it doesn't work out? Monica: Why isn't it working out? Rachel: I don't know. Sometimes it doesn't. Monica: Is he not cute enough for you? Does he not make enough money? Rachel: No, I'm just- Phoebe: Maybe there's someone else. Monica: ls there someone else? Rachel: No, there is no one else. Monica: Then why the hell are you dumping my brother?