So my MC is a super villain and his love interest is his side kick he's a supernatural type and he's something of a scary ubber villain he's been around for a while and he in exchange for saving her life makes her his servant. Basically she knew what she getting into but at the same time she was backed into a corner. They are sort of like Joker and Harley but they have more in common with Lex Luthor and Mercy from Superman. The thing about them is that they have a very bizarre 50 Shades type dynamic where he at least begins by seeing her as his property and plaything and she's fine with this because of what she's been through in the past and he treats her significantly better than others have. The point is that it's no secret how messed up their relationship is she openly refers to him as her Master and he'll refer to her as his pet, property, possession. She acts as as his maid, secretary, enforcer, and concubine but their relationship evolves over time. This is because he's not human he doesn't like or care for certain concepts such as love. It later comes out that he was once human and she sort of wakes up those long time dormant human emotions he's long since suppressed. He doesn't openly show love towards her at first it starts more as him getting mad when someone hurts her and him getting mad saying things to people who hurt her like "How dare you harm my possession!" and him saying to her as form of comfort "You are mine no one else can have you no one else can even touch you." His ultimate goal is to bring about what he believes to be a paradise by enslaving humanity and he believes by doing so by ridding humanity of choice he will save it from itself. For her it's that she is afraid of helplessness she is devoted to the MC partly out of gratitude for him saving her and partly because she feels she needs him. At the same time she's afraid of going back to how she was before she met him and she was very helpless and weak pretty much she was forced into a life of servitude and was broken by the time they met she was about to die and then he stepped in. She's also loyal because she believes in the world he seeks to create and as someone who has suffered as much as she has she believes the ends justifies the means because in her mind he's going to create a world where what happened to her wont happen to anyone else and basically what happened to her was she was abducted and her life was destroyed by cruel and the perverse. She reveres him for his power and she's so broken she doesn't know how to function on her own and this comes into play a lot she strong in her own right because of the power he gave her but she is so used to taking orders from him she doesn't know what to do without him like she'll have a panic attack and say "I need an order I don't know what to do." I'm just wondering do they sound like good main characters and what do I need to work on? I just worry they are too screwed up for readers to enjoy.