David establishes ownership of you both.

David pulled his long cock out of Carrie with a slow, wet slurping sound. He propped his pillow up against the headboard and leaned back against it. "Hey babe, come here."

Carrie laid on the bed like a rag doll for a couple of seconds before summoning the energy to crawl to him. She collapsed onto his chest and he wrapped an arm around her shoulders.

David put a finger under Carrie's chin and lifted her face up so he could kiss her. It was a sloppy, open mouthed kiss, and he opened his eyes to look at you as he kissed her. You couldn't move, couldn't do anything except stand at the foot of the bed and watch as he grabbed her breast and squeezed it hard while shoving his tongue down her throat. The longer they kissed, the more animated Carrie got, as if feeling his tongue invade her mouth was working her up as much as his cock had. Finally he broke off the kiss and said, "Babe, you should probably tell him where he stands."

Carrie looked at you, a look of genuine remorse in her eyes. "I'm sorry, but I'm breaking up with you. I'm David's girl now."

David slapped her ass hard, causing her to yelp. Then he squeezed her tit harder and said, "Naw, don't lie to him. Tell him what you really are."

Carrie closed her eyes and inhaled deeply, a look you usually only saw on her when you ate her pussy, but David got it out of her so much easier. She opened her eyes to look at you and said, "I'm David's whore now. His full-on, filthy whore."

"But... no!" you said. "We're so good together, and you hate David!"

"I know." Carrie looked conflicted. "I know, I really do hate him, but I need him. I need his big cock! I thought I'd been having orgasms before, but now I think I'd never really had one." She looked at David's cocky grin and melted. "I need you. I'll do ANYTHING you want. I mean that. As far as sex goes, there's nothing too sick, too depraved, I'll do anything you want me to do, David."

Your heart broke in half as she made the same promise to your asshole roommate that she'd made to you.

David smiled like the cockiest prick in the world. He looked at you, then back to Carrie. "Damn! You really are a hot, little whore, aren't you! Okay, let's test this. If told you to go into an old folks home and suck every 90 year-old cock in the place, would you do it?"

"If I could have sex with you afterwards, yes!" said Carrie.

He grabbed his phone off the table and started taking pictures of her. "Hold up your tits, I've got to send some pics to my buddy, Clint. Would you dress up as a cheerleader, fuck a whole football team, and let me film it?"

She sat up and held up her breasts for him. "God, you're such a pig, but yes! Oh shit, I'm getting hot thinking about it!"

David tapped out a quick message to his buddy, then kept taking pictures as he said, "Would you fuck this loser again if I told you to?"

Carrie glanced at you, but just for a moment before looking back at him. "Yes, just as long as you promise to satisfy me afterwards."

David tossed his phone down and looked at you. "Do you hear that, loser? Your only chance at ever tapping this fine ass again is me. I know you want to, you've had your hand on your cock since you came in here!"

It was true. You'd put your erection away, but you'd been rubbing your crotch without meaning to. "Will you... will you actually share her with me?"

David laughed. "Yeah, I'll tell her to fuck you occasionally. But only on one condition."

The room went quiet. Carrie leaned back down and started caressing David's chest and giving it little kisses. He slid his hand down her back to her ass, then made her give out a surprised little "eep!" as he slid his middle finger into her asshole. Her face was just bliss and devotion as she continued covering his pecs with loving kisses.

You asked, "What's the condition?"

David grinned ear to ear. "You're my bitch. You'll do whatever I want, whenever I want, no objections. If you can be a good little bitch, I'll occasionally let you have a pity fuck from your ex-girlfriend."