Luther:
-5/10
-it really depends on his mood

Diego:
-11/10
-he's lost so many lovers he has to make sure you're his all the time

Allison:
-3/10
-she will never show it if she does

Klaus:
-0/10
-he fully believes you will die together so he's not worried

Five:
-1263920/10
-you are his first lover that's not an inanimate object, he must protect you at all costs

Ben:
-6/10
-he trusts you, but not other people

Vanya:
-4/10
-she needs constant reassurances that you won't leave her, but she doesn't become jealous, just insecure