Jon been so distracted checking his changes that he didn't notice Zoe entering the room until she hugged him from behind. "Hello sweet fallen angel." She said running her hand down his chest, and the other hand to his crotch; and also kissing his neck.
He couldn't help but to blush, his own little sister was there kissing and groping him. He felt so submissive; indeed he was feeling like he was the one with the traditional female role of a relationship. "H-Hi Zoe " he said shyly, looking into Zoe's eyes through her reflection in the mirror.
Zoe smiled "I know that I shouldn't be seeing the bride before the marriage, but I can't help. I missed you." She said and continued kissing his neck, cheek and then gently biting his earlobe.
Jon found himself in pleasure, getting hard down there, while his sister also noticed Jon's hardness, squeezing tight his member. "I'm so going to fuck you right now!" she said as she started undressing Jon's jeans; letting him know what she thought about what he was currently wearing (his normal clothes) "After we marry, no way to you wear this kind of stuff, I want you to wear dress and other things that make you look cute. Not to mean that be easier for me to strip you down."
As for Jon, his mind was racing so fast that he had absolutely no idea what to do, just let Zoe continue what she was doing