The whole "he turned me down six times" isn't "I want to fight him so bad, and I'm feeling jilted," the context (and context matters), is that Conor's post said something to the effect of "if you want it, ask for it" - so he was pointing out that, no, it's not just a matter of being able to find Conor, and that Conor wanted nothing to do with Justin when Conor was more relevant.
He said he just doesn't care about Conor any more, because he's not relevant, said Conor is on steroids, so there's no point to taking the challenge seriously, and that it does nothing for his career.
He said, quite explicitly, about a dozen ways that he's not interested in Conor and doesn't take him seriously as a fighter.
He was clearly struggling with the Conor questions because he hasn't given them any thought, BECAUSE HE JUST DOESN'T CARE, as he said, what, three, four, five times? Why are you befuddled by what he means by that?
"and I probably shouldn't even say that if I want the fight".... but he just did, which means, what? He doesn't want the fight, because he doesn't care.
So what's with your need to try and psychoanalyze how he REALLY feels?