Derek: Your best friend is sleeping with my wife.
Cristina: Mere?
Derek: Yeah.
Cristina: Why are you telling me?
Derek: Because-
Cristina: Im not the persons whose wife is sleeping with their girlfriend.
Derek: Meredith isn't my girlfriend anymore
Cristina: Yeah, cause she's with your wife
Derek: *glaring*
Cristina: Look, Im not a cheating, lying man slut
Cristina: That's Mark.
Derek: Mark slept with my wife
Cristina: so did your girlfriend










