Mark: You can expect that hyena laugh as soon as he notices. Her jealousy will be utterly amusing to him because it’s absolutely ridiculous. He would never have eyes for anyone else; she has nothing to worry about. But the way she gets all works up is 50 shades of cuteness to him.
JB: It’s kind of an ego boost for him. He likes knowing she cares enough to get jealous, but it’s also something he would want to resolve quickly. As flattering as it is, he doesn’t like his girl being upset, so he’ll do his best to hide just how tickled he is.
Jackson: This absolutely breaks his heart. He understands that with his job, he’s put into many situations that may not bode well with his girl, but he tries his damnedest to let her know she’s the only one in his world. Her jealousy would show that she’s still insecure about things. After a stern reassurance that she has nothing to worry about, Jackson will put 100% of his efforts into making sure she never feels that way again. As for the gif, let’s pretend you’re Mark receiving your scolding real quick, alright?
Jinyoung: To him, his girl’s jealousy is almost borderline annoying - per se. He’s not a fan of watching he get all huffy over something she doesn’t need to worry herself about. With his job, there’s going to be a lot of instances that would make most girls jealous, but he doesn’t want his girl to be that way. If she’s jealous, then she’s not confident in their relationship, and that doesn’t sit well with him.
Youngjae: Poor Sunshine wouldn’t know how to react. He might not even notice right away because he really wouldn’t realise she has reason to be jealous. Once he catches on, he’ll be all sorts of flustered - cue the nervouse laughter. He doesn’t like her being upset and he also doesn’t know how to fix it. He’ll get all dramatically whiney and apologetic and it’ll be the cutest thing ever. She’ll have no choice but to get over this jealousy quickly.
BamBam: Teasing up the freaking wazoo. “Oh, it my girl jealous?” Ego up the wazoo. “I know you have the best, sexiest boyfriend in the world, Babe…” Grease up the wazoo. “But you’re the only girl for me.” Gag me with a spoon. He’ll get all sorts of inflated and just… ugh. He will probably get so damn cocky about it that her jealousy would fade in realization that she is indeed the only girl for him because no one else would be insane enough to put up with him. But really, it’s all a part of his damn charm.
Yugyeom: Oh, sweet little maknae. He would be another one that finds her jealousy almost unbearably cute. Bouts of aegyo and super cute teasing is his initial reaction. All the while, he is pretty lighthearted about it because he really doesn’t want her to get any more upset. It’s a nice ego boost that makes him all the more happy to have her and only her by his side.