The Rocket beat Trump 18-13 to secure a record-equalling seventh world title on Monday (May 2) evening. He was an emotional wreck as the pair shared a lengthy embrace post-match.
O'Sullivan later revealed it was Trump's words that caused him to break down. Speaking to Eurosport, he said: "It's relief. It’s just a really hard tournament, just to get through the matches, it’s long, drawn-out. I don’t know what to say. I was so emotional.
"I was emotional because of the drain and the effort and to finally just get over the line. I just never thought it would happen and I just gave him and big hug and I’m just sobbing in his arms.
"He just said some such lovely words. What he said to me just blew me away to be honest with ya. It just blew me away and I love Judd. I love him, he’s a good lad, he’s a great lad. I didn’t realise what he thought of me until then.
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"And I was like, different respect there and I didn’t realise how he sees me and how I’ve kind of helped or been part of his development. And it’s great for snooker that we’ve got someone like Judd, playing the way he plays.
"And there’s a couple more coming for him. It’s gonna be brilliant. Like John said, he was proud to share the stage. That’s my best result ever I think."
Asked if their exchange was his nicest Crucible moment ever, O'Sullivan replied: "Without a doubt, without a doubt. What he said, Judd, just done me in."
The tears started to roll down O'Sullivan's face again while he reflected on the moment. As he wiped them away, he concluded: "It’s just what Judd said you know."