Harry: 7/10. he understood that you had a life, and that he couldn't control how other people talked to you, but that doesn't mean he thought about all day after
Ron: 6/10. he wasn't that jealous, but when he saw someone else flirting with you or being too affectionate he got very upset. he didn't like the idea of other people liking you. it made him feel insecure and sad, he would be very affectionate and protective the rest of the day
Fred: 2/10. fred knew what it was like to be flirted with, or to flirt. he knew it was harmless and that you loved him
George: 7/10. george would get sad. why aren't they flirting with me. george knew he was being irrational, but he couldn't help get upset
Neville: 5/10. i honestly don't think he would really mind. i don't think he would see the big deal with it mostly. other times he would get very insecure and upset. telling you how that made him feel
Draco: 1000000/10. he is,, himself. i think we all know why he's like this
Tom: 10000000/10. same with draco
Ginny: 10/10. she got very upset when other people would flirt with you, causing some fights when it happened
Hermione: 6/10. she was v in love with you, and got a little upset with other flirtatious/affectionate stuff would happen
Luna: 3/10. i headcannon her as being polyamorous so i don't see her as being all that jealous at all