Quote from Phoebe in The One with Ross's Denial
Phoebe: Okay, whatever you say. But just be careful. Rachel's not in the same place you are. Ross: If the place you're referring to is being in love, then she is in the same place as me, because I am not in that place. Phoebe: Okay, I didn't understand that. But, you know, maybe that's because you were speaking the secret language of love.