I must say. I ABSOLUTELY LOVE your work. I was so connected with Button and you made everything so amazing. So like bravoo!!!! What I wanted to ask whatsoever was.... How do you think Ro's would react when jealous? It's always a good way to stir things ;)
Sally: Is immune to jealousy. She and Button have been joined at the hip for most their lives, and they often know each other better than they know themselves. Some interloper thinks they're going to turn Button's head away from her? Please. Sally pities the deluded fool.
Grayson: Another one who doesn't really get jealous . . . unless he reaches out to hold Button's hand and discovers that they seriously want to reciprocate the other person's attentions (in which case, he brings it up when he and Button are alone, because part of him will always be a teensy bit worried that Button might prefer to be with a non-Ment). Otherwise, Gray remains polite if someone hits on Button. After all, he can't blame them for having excellent taste.
Kent/Kenna: K's jealous behavior is actually shown in-game as of Chapter 10! K gets passive aggressively territorial--slinging their arm around Button, acting protective, and even (deliberately) calling the person in question by the wrong name.
Glitch: Not the jealous type, but does believe in taking precautions by reminding Button that they're clearly the superior choice when it comes to romantic partners. Good luck flirting with Button while their significant other is reciting love poetry every other sentence and clinging to them like an over-attached koala.
Rosy: Rosy doesn't get jealous. Rosy gets revenge. Luckily for would-be flirters, Rosy has a death glare that preemptively stops most from making what would be the biggest mistake of their lives.