You'll have to excuse me for posting late, as I registered last night. Hopefully these are accepted.
Here's the first scenario: My ex-girlfriend has called me a month after ending things and asked that I drop off some papers that she left at my place. I agree and go to her place to drop them off and her friend/roommate answers the door wearing an oversize sweatshirt. I tell her why I'm there and she says my ex-girlfriend is out and invites me in. We get to chatting as we always got along when hanging out with my ex. I mention that it's too bad we don't get to see each other as much and she reciprocates, we get closer and she mentions she whispers in my ear that she's not wearing anything other than the sweatshirt. Then some making out starts and we undress each other. After a few minutes of intimacy, the door opens and my ex appears. The roommate is surprised as she did not expect her back yet and tries to leave. My ex is a bit annoyed at us both, and starts telling off the roommate and telling me how I'm probably not even doing a good job satisfying the roommate. But then tells the roommate to stay here, lie on the bed face down and ties her legs to each corner and wrists together and then starts instructing me on how to satisfy her better. This goes on for a bit, possibly involving toys, and my ex starts to get into it herself, eventually saying "ok, let's see what you've learned", unties the roommate, and tells me to start on her. All three of us keep going until everyone is done.
Incall, 60 to 90 minutes. Dates are flexible.