The Gypsy King knocked the Body Snatcher out in the sixth round with a sickening right uppercut to retain his crown as the world’s best.
But Matchroom Boxing promoter Hearn reached out to Whyte to offer him his sympathy despite not being involved in the promotion of the fight.
Speaking to DAZN, Hearn revealed he told Whyte to ‘keep your head up’.
He said: “I only messaged him this morning. I guess, when you get beat like that the last thing you want to be doing is receiving messages from people telling you to keep your head up. I just fired him a message saying just that.
“I viewed the fight as a fan more than anything. Dillian’s a friend and we weren’t involved in the fight. If I’m being honest. I didn’t like what I was seeing at the press conference, at the weigh-in.
“I think Tyson did a good job to befriend him at those events, when we all know Dillian’s greatest asset is his ruggedness and his ability to put fear in people. And I actually think you see Tyson fight with that fear, in the fight.
“Let’s be honest, it was a poor fight because Tyson did exactly what he needed to do to win that fight, and he’s very clever at that. And what he needed to do was negate that Dillian Whyte, hold him whenever he could, walk him back to the ropes and box from the outside.”
Whyte offered very little resistance as he went down in the sixth and the fight didn’t last much longer than that.
But Hearn believes Whyte’s ‘friendly’ approach ultimately led to his downfall as he believes he allowed Fury to get inside his head in the build-up to the fight.
On that strategy, he said: “For me, Dillian Whyte was too passive in the early stages, it was friendly-friendly.
“There were a few elbows going in as the fight warmed up. Dillian will feel he just made a mistake in the fight in this moment. This wasn’t a mistake like a [Alexander] Povetkin mistake, when he was controlling the fight.
“He was getting outboxed, I didn’t give him a round in the fight, maybe one round. Again I’m saying this as a fan, and fans will say [Anthony Joshua] vs [Oleksandr] Usyk, he never imposed himself. You have to admire the quality of Oleksandr Usyk and Tyson Fury, they didn’t allow them to impose themselves in the fight.
“I think inactivity played a massive part as well. I think Dillian has fought something like six rounds in two years. It’s very difficult to go in with inactivity and beat a great fighter like Tyson Fury.”