I don't blame O'Sullivan for saying what he did. He hurts him to lose to Selby and it has affected him greatly. When he goes for a run, when he goes to bed, when he goes for a drive, he is forever thinking about the number 6. He sees a number 6 bus going down the road and he loses concentration for a minute. The sees a clock in Chigwell town centre chiming for 5 o'clock, and he thinks, 'if only that clock could have chimed one extra time'. He has images of Selby's winning fist pump going through his mind on a daily basis. It hurts him, and it a form of release to attack Selby's style of play. It is therapy for him.
Selby has done O'Sullivan twice at The Crucible after O'Sullivan has thrown away massive leads and it won't be until O'Sullivan has finally beaten Selby on snooker's biggest stage that he will be able to fully look forward rather than backwards, Therefore, we should cut O'Sullivan some slack here and understand his mental torment.
Selby beating O'Sullivan in the World final and stopping O'Sullivan from winning the sixth World title is hugely annoying for O'Sullivan,as everbody thought, he makes it 6 now.
But you know as well, that O'Sullivan beat Selby in 2 Mastersfinals and two times at the UK as well(Selby hasn't beaten him at the UK so far) with O'Sullivan leading the H2H overall.
Selby can't stand O'Sullivan either, the difference is just that O'Sullivan is rather the person , who makes it public and doesn't hide his feelings, while Selby keeps it for himself.
O'Sullivan and Selby were and never will be friends, that was already the reality long before the World final.
And it's allright how it is. Rivalries are good and little digs at each other is fine as well. That's what you want in professional Sport.