Tom Jones and Elvis Presley's was a friendship that went beyond their mutual admiration for each other's talent.
When Jones and Presley first met in 1965 in Hawaii, it was virtually love at first sight, reports the Daily Mail.
The two stars would certainly exchange intimate secrets. Jones stood by Presley when Priscilla left him for his karate instructor, Mike Stone, in 1972.
Mike Stone later said that Presley had threatened to come after him with an M16 rifle. He had to be sedated before someone got seriously hurt.
It was not the only time that Jones had seen Presley angry. Whenever John Lennon's name came up, he would fly into a rage.
Presley got annoyed with Lennon because of his anti-war feelings that he expressed the moment he spotted table lamps model wagons engraved with the message, 'All the way with LBJ.'
Lennon hated President Lyndon B Johnson for raising the stakes in the Vietnam War.
Presley allied himself with the FBI director Edgar Hoover and encouraged him to have Lennon thrown out of the US.
"He should've been kicked out long ago," Presley told Jones that night.