Nah they're not gonna get married. Jon isn't going to continue fucking his Aunt, no matter how hot she happens to be. Also, Dany won't suffer someone else to have a better claim to the throne than her. The divide is there. Something will have to give. These are two of the characters in this series that have been unchanging. Jon will do whatever he thinks is right, no matter what and damn the consequences. Dany has lived her entire life believing that the Iron Throne is hers by right, and her goal has been to take back what is hers. Everything she's done has been toward that end.
There will be no more sexy time for these two.
On a side note, Jaime is one of my favorite characters and always has been. He's a great character because of his growth throughout the story. I was glad when he didn't apologize for kingslaying and fighting against the Starks. I did predict (to my friends) that he wouldn't apologize to Bran, so I was wrong on that note. I still think he kills Cersei in the end, so should be safe next episode.