Quote from Ross in The One Where the Stripper Cries
Ross: Well, he and I both really liked you a lot but we didn't want anything to jeopardize our friendship, so we kind of made a pact that neither of us could ask you out. Missy: Really? Ross: Yeah, why? Missy: Well, Chandler and I used to make out. A lot. Ross: You did? Missy: Yeah. We'd go to the science lab after-hours. Ross: And on my turf?!