He doesn't

"Don't!" you beg, and expect to feel yourself use your power to make him plow your ass, but nothing happens.

"Okay." he says with a smile.

You look at him, confusion turning to shock. "What?"

"I won't do it. You told me not to make you cum, didn't you?"

"Yeah... yeah. I'll just, uh, go to the bathroom real quick." you turn and begin walking away, planning to finish this in the bathroom with a quickie. Instead, you feel him grab your hands, and then a belt wrap around them. You struggle, but the belt is tight, and fastened well. Zack must have some experience with bondage.

"I thought you didn't want to cum, Justin?" He leans in and bites your ear, before whispering "Well, you aren't going to. Not. Until. You. Beg."

"Zack..." you start, but he cuts you off.

"And while I wait for you to surrender, I'm going to have some fun. It might make it a little... harder for you, though."