All of this is unbelievable....and decidedly false.
Sinatra’s valet wrote a detailed book about Frank and Frank’s love life. The valet was responsible for buying the flowers and candy.........setting up the rendezvous, seeing to it that the girl got home safely, and so on.
The ONLY thing he said about Jackie is that she did not like Frank or Hollywood....the Peter Lawford/Sinatra connection to Marilyn Monroe irked her.
When Marilyn died, Joe DiMaggio refused to let Lawford and the other Hollywood swordsmen attend her funeral....he detested them...blaming them and Hollywood for Marilyn’s demise..
That’s pretty much what Ive heard. Lawford was a glorified pimp.