John, having often times said in the Web Comic, is not Homosexual.
So, what if he really isn't? What if he's Asexual?
but think.
John has relations that are romantic, but he seems not attracted  in all other places sexual.

((I apologize if I've offended anyone! I don't know much about Asexuality myself, so I'm sorry if my ignorance has made anyone annoyed!))