Either Jon or Daenerys, but not together. I reckon one of them will die in some tragic twist making it all bitter sweet. Maybe Jon dies but then it's found out that Daenerys is carrying his kid, the start of the second Targaryen dynasty. She's making a bit of a point about not being able to carry a child, not sure why though? I know she lost Drogo's kid but I didn't think that meant she was now ermmm barren?
You know nothing born hunter