She cleans it

Amy looked at me with a mixture of revulsion and lust. "I..." she started.

Lynne turned around and sat in her chair. Her face was close to Amy's and to my cock. She watched with disbelief as Amy opened her mouth and took my cock, that had just been in Lynne's ass, into her mouth.

I reached down and put my hand on the back of Amy's head as she swirled her tongue over my cock. "That's it," I said. "Clean it really well. Next time you can lick it clean with your tongue while we watch."

Amy had dropped her clipboard and was masturbating now. She started sucking my cock in earnest, getting it deep into her mouth.

"God that's gross," said Lynne.

I looked down at her. "No, Lynne, it's not gross. In fact, I think you will learn to appreciate it. Tonight I want you to offer your ass to your husband, and I want you to clean him off like this when you're done. Understand?"

Lynne nodded wordlessly. I could tell she was a little scared, so I said, "Don't worry, Lynne. This is an important part of your therapy, and after a few weeks you'll see how helpful it is."

Amy was thrusting her face onto my cock as hard as she could, now, making my cock plunge deep into her throat while she masturbated furiously. "I'm not going to cum again, Amy," I said, looking down at her. "But why don't you go ahead?" And with that Amy had a shuddering orgasm with my cock buried in her mouth.

Amy pulled off my cock and turned to Lynne. "Well, that concludes our session for this week. See you next time."