I had sex with a Redditors girlfriend while he watched [MFM]

I met this guy on Reddit who was looking for another male to fuck his girlfriend. They had never done it before and were looking for their first experience.

We talk for a while and finally set something up. Going into it I really had no idea what to expect. The rules were 10-15 minutes of sex and I leave immediately after. I get to their place late around midnight. I text them I’m there but get no response for 15 minutes. I’m getting ready to leave, thinking they chickened out, when the girlfriend finally texts saying to meet them by the apartment entrance.

The boyfriend, a normal looking guy but clearly very nervous, let’s me in and doesn’t say much. I head to the elevator where the girlfriend is waiting. She is wearing a long yellow dress that highlights her curvy body and from the way her perky breasts show through, she clearly isn’t wearing a bra. Our eyes lock, hers are gorgeous. She is also very nervous and doesn’t say much either. I come over to her, a hand on her hip and saying how great she looks, but she shifts uncomfortably and says she doesn’t want to be too forward.