Kennedy even admitted that he planned to seduce Mary Jo Kopechne on the night his car plunged off the road in Chappaquiddick, said the source.

“But his lawyers and friends begged him not to open that door. They said that even after his death, it would hurt his legacy and haunt the family,” said the source.

“He relented about Mary Jo, but went on to admit that he’d seduced the wives of some of his closest friends and even his brothers’ girlfriends.”