It feels like it's being shoehorned in... It will probably come across better in the books since we get into the characters' heads better in that format, but I'll just have a hard time finding a "love" story between the two credible, especially with 7(?) episodes remaining this season, factoring in the time that will be spent on changing POVs ie: Sansa/LF, Bran, Arya, Melisandre,
Gendry?
, Cersei, Euron, and any other NK/WW scenes... I'd find a political marriage/alliance of necessity much more believable.
I think a big problem is that they spent too long apart, and gained two VERY distinct fanbases who often dislike the other: Daenerys is VERY loved by the gays of ATRL, while Jon always gets dragged on this site. Straight boy reddit tends to love Jon, while Daenerys gets... Mixed reviews, from what I've seen. I personally casually like Jon, and Daenerys is my second least fave of the remaining characters (though well ahead of Cersei)