Peter needed but little coaching on what to do, and was sliding his dick between Erika's breasts with wild abandon.

"I've never actually seen that in real life," gasped Sara, a note of jealousy in her voice. Not of her husband being with another woman, but jealousy of what Erika could offer that Sara could not. I just fucked Sara harder. I gasped to her that right then she was offering me all I could possibly handle.

We both kept our eyes locked on outside, both sensing that Peter was about to lose it. I slid in and out of Sara relentlessly, not even pausing when Peter's back arched hard...