#1. Stacey Keibler-Randy Orton
It's no secret that WWE tried to make Randy Orton the face of WWE before they realized that Batista, and eventually John Cena, were better long-term options. It turned out to be true, but it doesn't take away from an amazing year that Randy Orton had in 2004.
He was a part of Evolution and would beat Chris Benoit to win the World Heavyweight Championship at SummerSlam. The faction would soon turn on him and he had a run as a babyface where he briefly held the World title before losing it to Triple H.
While the plan seemed to be for him to regain it at WrestleMania, WWE realized two major things - Firstly, Orton wasn't getting over as a babyface as hoped and secondly, Batista was slowly emerging as the potential breakout star of Evolution.
In early 2005, Orton had an on-screen relationship with Stacy Keibler which went well, up until he hit her with an RKO to turn heel again. It was one of his most despicable heel moments. The two were never together off-screen.