More explanation

"Now, what do you want to know?"

You looked at Lily with a complicated expression: "Are you sure you're okay with letting a stranger fuck you?"

She laughed: "Of course! But please don't think of me as a slut. I'm just a professional, and professionals do everything to see their job done."

"But... what if I get you pregnant?"

"You still don't get it, do you? That's the point: I MUST get pregnant if the treatment is truly effective. Or are you worried about cheating on your wife?"

"I... I don't have a wife. Not yet."

"Really? What a pity. You have to uphold Rule 9, otherwise..."

It took you a while to digest her words. Then you reluctantly asked: "If... If you get pregnant for real, what do you do about the baby?"

"That depends on your choice. I can get an abortion, or I can give birth to it and let you take it home. Any question?"

You shook your head.

"Good. Please stop at the cashier to pay. See you again."