How often and how much they get jealous - 

Luther: 100000000000/10 - As soon as he sees a guy checking you out or flirting with you, he's bound to jump in

Diego: 8/10 - He gets pretty jumpy and accusatory, but when you tell him you're okay, he calms down

Allison: 6/10 - She gets pretty jealous, but doesn't show it

Klaus: 2/10 - He loves you and trusts you so muchhhhhhh

Five: 4/10 - I feel like Five wouldn't get jealous as much but when he is, he's ready to kill someone

Ben: 6/10 - Same as Allison pretty much

Vanya: 10/10 - Vanya is really insecure and so if she thinks you're leaving her, she'll get upset (and blow up the moon), but let's not get into any specifics, yet

Sissy: 8/10 - If someone is bothering you or if she feels threatened by someone, she'll be pretty upset and drink... A LOT

Lila: 5/10 - She's kinda like Diego, but less... violent