I had this sort of bisexual mary sue couple who appeared in my first fanfics and as well as shagging each other (one was a girl and one was a guy) they shagged a load of the canon characters too and then they broke up and he had this alien implantation pregnancy thing and nearly died and they got back together again. And the odd thing is that some people actually enjoyed it! I'm glad I don't use the same name online as I did then.