Territorial

Maybe you can tell. I have a new muse.

I met him online, as has been my habit for the last several years. I met him in an unsuspecting place, in a relatively tame, vanilla way, but the longer we spoke, the more of our darkness' we let out, and in doing so, I have found in him someone who has ideas and viewpoints that rattle me. We chat nearly every day, and almost every day, an innocuous word from him will inspire my inner erotica writer, and I will begin a new story.

(No, it's not a relationship other than a mutual respect for each other's seemingly bottomless pit of perversities. I'm not looking for much more than that, and neither is he.)

"I’m not a selfish man.” He said in a low tone. “I’m willing to allow you to fuck other men anytime you choose. But this part of you,” he continued. “this part of you kneeling in the tub at my command, this is mine, and mine alone. I will not share it. Am I making myself clear?”
She nodded, her breathing starting to become less even and more labored. “Yes, Master.” She whispered.
“So, I don’t need to tell you again.”
“No, Master.”
“Do I need to show you, or anyone else what is mine?”
Automatically, she responded. “No, Master.”
“I think perhaps I do.”
The finality in his voice kept her from responding. Her knees, cold in the water against the tile, shook a little, as she waited for him to continue.
Stepping closer to the tub, he grabbed a handful of her hair carelessly and pulled her head back. “Stay like that. And keep your eyes closed.” Taking hold of his cock with his right hand, he leaned over her, and braced his left hand against the back wall of the shower. “The things you make me do to you…” he grunted, as he closed his own eyes, and felt a stream of piss rise up through his cock.
Her eyes still closed, she felt the warm water-like liquid hit her skin, and was confused for a moment. She could feel the bathtub spout still pouring water into the tub around her legs, and the temperature was much warmer than that anyway… With a jolt, her body actually reacting physically to the thought, she let out a small whimper.