You stop her by persuasion

"Maria. Stop," you say.

The authority in your voice does give her pause, for a moment. You walk up to her and put your hand on her shoulder. She stiffens at your touch.

"I want to forget I ever saw you," she says, "I just ruined the best relationship I've had in years for - for nothing but dumb sex!"

"That's not true. I saw the look in your eyes. I saw the desire, the craving for something different. For someone different."

"Fine, I admit it. I'm a whore who let her pussy do the thinking today. I acted like a piece of shit. But love and trust are still important to me and I'm going to leave, and fix what I can, and never talk to you again!"

You enclose her in your arms, a tender hug. She's rigid and trembling, but doesn't pull away.

"Those things are important to me too. What was what we had today, if not a bond of trust? You have to let them show you new horizons, to push you, to give and take pleasure from them with no reservations. And love? You saw with your own eyes what Stacey and I had - an unusual form of love it's true, but a deeper, purer one that you see in most romantic movies wouldn't you agree?"

The last words about Stacey raise bitter bile in your throat, not because they're a lie, but because they're painfully true. You brush that aside. Focus on what's in front of yourself.

"Besides," you continue, "what's really left for you with Michael? Not just what you told him, but what you've discovered about yourself now. Can you go back if he accepts you?"

She's wilting now, you know you have her.

"If I stay... Do you promise to make me forget all about him? To - to try to let me love you?"

She embraces you, sobbing now, head in your chest, breast pressed against you. She must be able to feel your cock pushing at her stomach.

"Yes, Maria. I swear it." you say.

You pull her chin up and kiss her deeply.

Yes, you would show Maria your own special sort of love.