Ciel Phantomhive: Tense when people flirt with you

-Would order Sebastian to kill them

-Ciel fearing you'd like Sebastian better

-Which makes him jealous

- Gets jealous easily

-When he does he gets violent and sometimes passive aggressive

-Manipulative

-Sometimes cold and uncaring

-Possessive

-He would be willing to go through with any kidnapping

-Blunt and will do anything to make him like you

Sebastian Michaelis: He is possessive

-And jealous

-He'll threaten anyone who flirts with you

-Cold at times, hot at times

-Seems like a perfect lover, but under the disguise is one scary mother-efer

-Will do anything to keep you with him

-Calls you his "kitty"

-Would never kidnap you

-But he would charm you

-A total demon

-Literally

-Dangerous as hell

- If you love him back, he will always do his best to be a true gentleman towards you 

-A dangerous protector

Alois Trancy: Possessive as hell

-Light stalking

-He will cherish you like the purest gold and won't be able to see any flaws in you at all.

-Will become your best friend and advance from there

-Forcefully if he feels there is no other way

-Cares what you think about him too much

-He hates other looking at you and gets jealous easily

-He usually takes you completely out of the situation at hand 

-Shortly after those people who were looking at you too long are magically gone

-(Orders Claude to kill them)

-When he's mad he slaps you

-Slaps everyone, really

Claude Faustus: He would be emotionless as usual

-Doesn't get jealous, just... worried

-He'll kill anyone that flirts with you

-He's the kidnapping type

-Violence is something he likes and uses to get what he wants

-He enjoys the fact that you're scared of him

-Doesn't care what you think of him

-Cold and ignoring you 

Undertaker: -When he gets a crush on a person, they are the only person he loves forever. 

-He believes in soulmates

-He is the type to kidnap  

-Believes that he shouldn't have to be apart 

 -Kidnaps you

-But don't worry, because once he has you, he treats you like a queen.

-Loves to try and make you jealous. 

-Would never go with anyone else willingly, but he pretends like he will

-Once you notice, he takes you away and shows you he would never cheat

-If you ever tried to leave him, he will kill the person you love

-No matter what, with no hesitation

William T. Spears: Seems like he doesn't care about you

-But he does

-The calmest out of all of these

-And nicest

-Doesn't get jealous until you start flirting back

-A bit bolder around you

-No real stalking, but low-key eavesdropping

-Actually not a bad person

-Believes in soulmates