Roz: It's obvious what's happening here. You are having a purely sexual fling. It happens to all of us at some time in our lives. The one where the chemistry is perfect? Where you can't even be alone together in a room without tearing each other's clothes off and jumping each other. I mean, does this sound familiar?
Frasier & Daphne: Yes.
Niles: [just a little late] ... Yeah.