"In my experience, desire is desire, love is love. I have never fallen in love with a gender. I have fallen for individuals. I know this is hard for people to do, but I don't understand why it's so hard, when it's so obvious."- Every Day, David Levithan
A is not a boy, not a girl, not even someone in-between. He just exists. He goes from one person's body and takes over for a day. One day, he took over Justin's body and fell in love with Rhiannon, Justin's girlfriend.