Thinking about Jongerry incest when Jon’s libido spikes when he starts testosterone. Thinking about Jon on his knees before his sister, humping her leg like a dog while she teases him for being so needy, so desperate. How cute he’d look with a collar on him, all needy and desperate and hers. And he hasn’t really thought about it before but suddenly it’s all he can think about and he gasps and shudders and cums against her legs.
Gerry starting estrogen at around the same time. Jon sucking at her nipples, kneading at her breasts as they begin to swell. Tangled together on the couch and dryhumping to completion. Gerry kissing up his neck, feeling Jon’s stubble against her cheeks. Just… Jongerry exploring their changing bodies together….