Of course not!

Tony tried. He really tried to follow Katie's rule. Unfortunately, this was pretty much impossible to do as Katie herself was blatantly disregarding her own rule. At first it wasn't too bad. While they were technically fondling each other's chests, those areas did need to be cleaned. And while she did pull him into an embrace, how else are two people supposed to wash each other's backs? Their respective members rubbing against each other was merely an unintended byproduct of their back-washing position. Katie blatantly groping his ass? She still had soap, so technically it could be washing. It very much wasn't, but it could be. It wasn't until Katie started straight up making out with him that Tony finally gave up and accepted that it was now fun time. He stopped washing Katie's back and joined her in the blatant ass-grabbery. For the first time, Tony was grateful for the accident; while it definitely sucked that he was stranded in this reality, he knew that it was unlikely he ever would have worked up the courage to be with Katie there, and given what Katie had said, it seemed that she also wouldn't have told him her feelings either. So what if she had strange genitals? This was Tony's new home, and it was a good one.

With these thoughts racing through his brain, Tony turned the tables on Katie, and went on the offensive. He began aggressively rubbing against her, sandwiching both of their dicks between them, and moved his groping from the outer cheeks to the inner cheeks, brushing his fingers against her anus.

Not one to be outdone, Katie snuck one hand in between them and held their penises together, gently stroking them in tandem as her other hand began to prod at Tony's hole.

Katie had always had a competitive streak. Even back in middle school, she hated losing, and it seemed like that quality still applied to her sex life. Tony realized that when he willingly, albeit unknowingly, fulfilled Katie's fetish, he beat her. He wasn't sure if it was conscious or subconscious on Katie's part, but she clearly didn't intend for that to happen again. Tony usually didn't mind when Katie beat him - he was never really that into sports (he mainly only participated in order to hang out with Katie and Zach), but this was different. Sure, he was nearly completely inexperienced and in a dimension where the sex rules he was used to didn't really apply, but that just made him an underdog. And if Tony had learned anything from sports movies, it was that underdogs always won. So Tony escalated the situation further.

He placed one of his hands on Katie's and joined her in the dual masturbation; with his other hand he pushed a finger into her asshole and applied what she had taught him earlier in the day by finger fucking her. Katie broke the kiss and let out an adorable squeak as Tony poked at her prostate. Tony took advantage of this by beginning to kiss along her neck.

"J-Jesus, Tony!" Katie was clearly taken aback by Tony's counterattack. "What's g-gotten into you?"

Tony moved his mouth up to her ear and whispered, "Oh, it hasn't gotten in me yet!" He punctuated this with a few tugs on her dick, emphasizing exactly what the IT was he was referring to. "And honestly? I kinda wish it was."

Katie's eyes widened as her brain desperately attempted to process this statement. Unbeknownst to her, Tony's mind was also attempting to deal with this thing that his mouth just said. The only thing breaking the silence was the steady hiss of the shower. They stood there, staring at each other, until Katie finally broke the silence.

"Uh, a-are you s-sure...?"

Tony could see the lust in her eyes. It was clearly taking every ounce of willpower in her to offer him a chance to decline, but that just showed how much she truly loved him. And with that, Tony's mind was made up.

"Katie, you are my best friend, the woman of my dreams, and the sole reason I have been able to deal with my situation. I am head over heels in love with you, and I would trust you with my life. In other words..." He kissed her again, pulling her into a hug, holding her tightly. Whereas his actions earlier were of a sexual nature, this was born of nothing but love. Katie hugged him back as he broke the kiss and said the words she had been longing to hear... "Fuck me."