John Cena is one of, if not, the greatest superstar in WWE history, as he has carried the company for the past decade, winning 16 world championships and main eventing WrestleMania on five different occasions.The Leader of the Cenation isn't a full-time performer in the WWE anymore, but he's making a huge impact outside of the ring, as he's doing a lot of projects outside the company and is fastly becoming one of the most demanded actors in Hollywood.Yet, like the rest of us, Cena isn't perfect, and the man himself revealed the WWE superstar that called him out and confronted him about his shortcomings.The 16-time world champion stated on Twitter that Monday Night Raw's Seth Rollins was the superstar who confronted him, as he said in a tweet: "Today a friend did what friends do. Confronted me about my shortcomings and gave me an opportunity to #EarnTheDay @WWERollins Thank You #NeverGiveUp."Following Cena’s Tweet, The Kingslayer simply replied with "#YearOfTheDog."

The nature of the confrontation wasn't revealed by The Leader of the Cenation, but judging by his open nature of the confrontation and his response to it, we can gather that it was most likely a friendly one and more of a motivational conversation.

Cena and Rollins famously feuded with one another when Rollins was part of The Authority in 2014, and when The Kingslayer was WWE World Heavyweight Champion in 2015. The two will face each other again later this month as well at the Elimination Chamber.

That's because both Cena and Rollins will face the Intercontinental Champion The Miz, Braun Strowman, Roman Reigns, Finn Balor, and Elias in the first-ever seven-man Elimination Chamber match in two weeks time at the pay-per-view, with the winner going on to face Brock Lesnar for the Universal Championship at WrestleMania 34.

Although it doesn't look like we'll be receiving a Cena vs Rollins match anytime soon since they'll both probably be involved in separate storylines, hopefully, we won't be waiting much longer to see these to clash in the squared circle again.