Former Beatle Paul McCartney felt betrayed by the King of Pop when Jacko bought up all the Fab Four’s tunes!

Despite making a couple of hits teaming in the 1980s including "Say Say" and "The Girl is Mine", the two superstars began having issues when at the height of his wealth and fame, Jacko asked Mac for business advice, Paul revealed on The David Letterman Show.

According to RadarOnline.Com the pair stopped making music together when a rift grew  between the two.

Jacko, who had purchased the rights to the Beatles catalog, wouldn’t re-negotiate a better royalties deal with McCartney and the other Beatles.

"He kept saying, ‘That’s just business, Paul, you know,’ so I went, ‘Yeah, it is,’ and waited for a reply," Paul divulged on The Letterman Show last night.

"But we never kind of got to it and I thought, ‘Mmmmm,’ … It was no big bust-up.

"We kind of drifted apart after that."

Paul’s U.S. tour kicks off tomorrow at the current home of the New York Mets, Citi Field, recalling The Beatles historic 1965 concert at the Mets’ previous home, Shea Stadium before 55,000 screaming fans 44 years ago.