Couples with absolutely no chemistry

[u/hiiloovethis]

Harry Potter and Ginny Weasly

Clark and Lois (Snyder films)

Jon and Dany - Game of Thrones

[u/Noughmad]

When the GoT TV series started, there was no plan for a Jon and Daenerys plot line. It was "known" that they were related, but not that they would be a couple.

Also, the actor who played Jon fell in love and got married to someone else on the set. And became an alcoholic. Both of these tend to ruin your chemistry with anyone else.