Everyone's got a dark side

Ronnie leaves America and moves away from her abusive guardian just to find herself an abusive demon. Not physically abusive like her guardian, but spiritually. She is slowly changing into a person she never thought she could've changed into. He makes her more aggressive every day though she can't stand to live without him. He too can't stand her but has to be with her. This love hate story all happens in the beautiful London England.