𝙻𝚘𝚞𝚒𝚜: Louis isn't really the jealous type, because he feels as though there is nothing to be jealous about (and he is right) but if he did get jealous it was pretty obvious, because he would start joking around with another kid and laugh really loud all while looking at you.
𝙼𝚊𝚛𝚕𝚘𝚗: Marlon is the jealous type, but he isn't obsessive. He just loves you, and is scared you will be taken from him. When he gets jealous he usually comes over to you and the person his jealous of and just sits not saying anything. The tension would eventually get to the person and they would leave. When you turn to look at him, he will just grin like an idiot.
𝙼𝚒𝚝𝚌𝚑: just like Marlon, Mitch does get jealous, but he handles it differently. When he is jealous, he tends to continue doing whatever he was working on, and glare at the person. He doesn't want to seem jealous because he doesn't want to "hurt his reputation." As he has said before.
𝙰𝚊𝚜𝚒𝚖: Aasim gets jealous, but it isn't really that obvious. He usually acts like everything is ok, or gets a little quiet and says he doesn't feel well. When you figure out what wrong with him though, you are quick to reassure him that he has nothing to worry about.