25. Claire and Frank, House of Cards
24. Marnie and Desi, Girls
23. Sam and Gilly, Game of Thrones
22. Don and Diana, Mad Men
21. Cookie and Lucious, Empire
20. Alex and Piper, Orange Is the New Black
19. Elliot and Shayla, Mr. Robot
18. Becky and J Poppa, Empire
17. Adam and Rachel, UnREAL
When it happened: Season 1, Episode 9, "Princess"
What made it hot: Rachel is an unhinged, self-destructive, sociopath, and Adam is basically the same. This was a hookup that was nine episodes in the making, and it was great to see Rachel with a man who doesn't have the personality of a potato (sorry, I'm not sorry, Jeremy).