As Ben stepped over the threshold to get within Cal's bubble, the unwitting enby was predictably blushing up a storm. After all, their friend had already taken an interest in them since he came back from the gym, so this would inevitably prove to be a potential relationship upgrade from mere friendship to getting potential benefits from skin-on-skin contact.
Alright, maybe I'm not gay... But I can't deny this bisexual crap any longer.
At the rate things were going, both Cal and Bryn were willing to get into the same cramped shower at the same time, and like any space with homoerotic coding and tight space, the two of them would get familiar with one another in no time at all.
"So, you mind if I lather ya up, Bryn?"
"I-I guess that's fine... "
With all that said, Cal would grab the bar of soap he had been using and got to work on Ben's back, massaging out their tension as he did so, all while their hips widened and their waist narrowed, imperceptibly shifting as they leaned back into the jock's motions... Then felt a sharp jolt, as Cal slapped his ass and sent a pulse of pleasure up their body, which Bryn was all too eager to welcome.
"Yeah, that's it..."
"Oh, you like that, don't ya Bryn?"
With an affirmative grunt, Ben would place their hands on the glass, allowing Cal to continue lathering their body, this time feeling their core muscles grow tighter, alongside their bro's hands massaging their waist to a more pleasing shape... After all, the enby didn't quite know that Katie was more into partners that were familiar with heat, highly sensitive, and all too willing to get rubbed up by men.
Eventually, Cal would move to pinch Bryn's sensitive nipples, this time causing the enby's pecs to balloon into small, A-cup breasts, and as Bryn moaned, he didn't notice that his hair was gaining crimson streaks around their bangs, nor did he feel his areola widen further and grow dark.
Eventually, however, the shower would be turned off, and Cal would pat Ben's back, silently grinning as he took in the enby's new form, before stepping out of the shower to dry off... Leaving Bryn alone as the fan whirred in the background.
Well, shit... That was kinda nice. Now what?