My Nemesis Is My Roomate?!?!?!

The basic idea of this is that one of us is a villain and one of us is a hero. I'd prefer to be the villain but can play the hero. We can choose from two possible stories. Number 1: They do not know each others identity and are living as roommates with no clue until one find out the others secret. This might cause conflicting feeling based on how long they are roommates. We can work it out. Or Number 2: They know each others identity and its all an act for the public and they are actually in a relationship. I have no preference for the gender of my partner and I prefer to Dom. Tell me if you'd like to work with me on this.