"I will," he said, looking Karyn intensely in the eyes. He had liked her for a long time, and would have jumped at the chance to have sex with her in normal circumstances, but this would do for now.
Karyn looked a little surprised, but her penis jumped when she realized he was serious.
"Alright Jon-girl. You've got yourself a deal."
Karyn stepped closer to him, pressing her penis against his stomach, and moving her breasts up against his neck. Jon was feeling aroused now too- Karyn was, dick aside, incredibly beautiful. He felt a strange warmth in his crotch.
Karyn moved in, kissing him up and down. She sucked on his nipples for a long time, and caressed his butt and legs as she did so. Jon was overwhelmed with sensation. Every touch brought him more pleasure.
After several minutes of delicious foreplay, Jon noticed that Karyn had yet to do much with her cock- it was as if she didn't remember she had it, and was enjoying this even without that novelty... He gasped with realization. He now knew why she had never come on to him before. He caught a glance of himself in the mirror as Karyn passionately kissed him all over. He was incredibly hot, and the two of them together were an image he could hardly bear to watch. Warmth welled up inside him.
He moved over to the couch and pushed Karyn down onto it. He sat straddling her stomach, and, lifting himself slightly, raised Karyn's cock into position beneath him. He lowered slowly on top of it.
He had expected pain, and the size of her member was enough to warrant a little, but the pleasure outweighed all. Apparently his vagina had no maidenhead, luckily for him. Slowly, he worked up and down, taking it in and out. He spasmed and came, but kept pumping.
Slowly Karyn started looking flush in the face. Jon too was building to another climax. Together, they moaned out as they finished togther.
Jon rolled over to Karyn's side, her sizeable piece sliding out of him. He kissed her gently on the lips. "I love you," he said simply.
Karyn looked dumbstruck. Tears began to well up in her eyes. "I... I love you too, Jon-girl." She hugged him tightly. "Was that weird?"
"It was at first, but you're hot enough for me to overlook your massive dick," he said with a smile.
Karyn returned a weak grin.