Rule #10: No blackmail.
The "booty and caller" relationship is built on mutual trust and attraction. There's at least an unspoken agreement to keep each other's private matters, private.
Breaking this trust jeopardizes the relationship, for the two parties become equals in bed, and when one threatens the other with the ultimatum of extortion or exposure, the perfect environment for a bloodbath has been created.
"Hey." Joey closed the bedroom door before slipping his shoes off, his gaze on the floor. "It's been a while, hasn't it?"
"Almost two months," Kaiba replied coldly, his shadow moving into Joey's view as he approached.
Just as Joey was starting to straighten up, Kaiba grabbed him by the throat and shoved him back against the door.
"If you steal from me again, Wheeler, you won't get away with it. I will press charges, and I will punish you. Have I made myself clear?"
"Ha." Joey choked out a faint laugh, wearing a crooked grin. "I'm sure the tabloids would like to know the kinds of things I know about you."
Kaiba's eyes widened fractionally, the only warning Joey had before Kaiba slammed Joey's head into the door with enough force to make him grunt in pain.
"Don't you dare threaten me, Joey Wheeler. I don't have to let you leave, you know, and I'm sure there are plenty of porn sites that'd pay good money for some kinky pictures of you." A vicious smirk, and he added, "And I'm sure Yugi and his dork patrol would love to see them too."
"You wouldn't," Joey choked out around Kaiba's grasp, looking shocked.
"I would, so don't push me. And don't"—he tightened his grasp momentarily, making Joey twitch and writhe—"steal from me ever again. Have I made myself clear?" He loosened his grip so that Joey was no longer suffocating, but he didn't let go. He wasn't ready to relinquish his power.
"I did it for your own good!" Joey protested hoarsely.
"Don't give me that crap." Kaiba's anger only increased. "You don't know what's good for me."
"But I know what's bad for you," Joey quipped—not a wise decision in his current position. Kaiba slammed the back of Joey's head into the door again before releasing him and turning away.
"Get out. Get out, and don't come back."
Joey had half a mind to do just that, but the other half of his mind was much more rebellious.
Hesitating before the door, Joey finally made his decision. He turned around and seized Kaiba's shoulder, forcing him to turn around so the blond could grab a fistful of brown hair and jerk him down into a fierce kiss.
They fucked, and it was the roughest hate-sex Joey could have imagined.
But it was still something, and it allowed Joey to stay close to Kaiba, for now.