Character A breaks up with her boyfriend and moves in with best friend who is gay. Best Fried has always had a crush on Character A, but never did anything about it. They start living a domesticated life, movies, shopping, cooking. And a relationship starts to grow.
If we wanted to add a dash of drama lol we could have character A be knocked up by her boyfriend and play with telling him or not. As for dark open to suggestions. I would love to play Character A :)