#1 Brock Lesnar and Sable (formed backstage in WWE)
Brock Lesnar was the biggest WWE Superstar on SmackDown, for the entirety of 2003. His meteoric rise to the top of WWE's food chain was impressive, to say the least, and fans knew that the company had found a once-in-a-lifetime talent who would take them to new heights in the coming years. Sable, who had left WWE years ago on bad terms, made her return immediately after WrestleMania 19, on WWE SmackDown. Brock Lesnar had won the WWE title at The Show of Shows, and was on top of the world at the time.
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Brock Lesnar is one of the biggest WWE Superstars of all time
In the coming months, Sable was featured heavily in storylines with Mr. McMahon, against babyfaces like Mr. America, Stephanie McMahon, and Zach Gowen. Lesnar, on the other hand, had become a top heel on the Blue brand after he turned on Kurt Angle. Around this time and in the coming months, Lesnar and Sable got close to each other, and were a couple soon after. Lesnar left WWE in March 2004, while Sable followed him around three months later. They got married two years later and have two children together.