So given that bote secks is a thing and a lot of various hints, I know they will probably hook up. But I really hope they don't. Besides the fact that I rather see Dany falling in love with Euron than Jon (at least if the trend of Drogo and Daario are any hint), and the obvious gross incest factor, there's also how geographically impossible it is if (or rather when) Jon becomes King in the North. Like what is Jon supposed to do. Go as a King to Dragonstone to negotiate, leaving himself open to i