Regulus black & Emmeline Vance l + the marauders

I've always imagined Regulus and Emmaline as a couple, but their story kind of of romeo and juliet.
I always thought that emmaline was sorted in griffyndor and she was best friend with the marauders and lily, dorcas, mary and marlene.
The story is simple:
Regulus decided to leave the school early with the others death eaters and tells emmaline about it, she asks if he's leaving because she's a mudblood. The marauders except for sirius, keeps telling her that he's not good enough for her and that he's a bad guy and for this reason she doesn't know if she can trust him. So she asks advice to her friends who try to support her.
Emmaline is very close to sirius because he's in the same situation that she's in and for this reason regulus asks her if she's sleeping with him.
I wanted to show in this video how emmaline understood that he was one of the death eatears during the party and i wanted to show also the differences between the two common rooms: In the Gryffindor we can see all the girls having fun with each other, in the slytherin instead they're having a meeting; That Emmaline figured it out later.
Regulus decides to fight back Tom riddle thanks to his girlfriend.
In the end of the video i put Emmaline that arrests Sirius, because she thinks that he betrayed James and Lily and she confronted him at Azkaban about it.
ps: Sorry for my bad english and i hope you like it
cast:
James: Aaron Jonhson
peter: Jamie Bell
remus: Andrew Garfield
sirius: Ben Barnes
lily: Sophie Skelton
emmaline: Nina Dobrev
dorcas: Dianna Agron
mary: Felicity Jones
marlene: Alicia Vikander
regulus: Thomas Hayes
bellatrix: Katie Mcgrath
tom riddle: Frank Dilane