Mackenzie Phillips' first husband JEFF SESSLER offered a close friend sex with the actress in exchange for a night of intimacy with his wife, according to a sensational new report.
The former child star shocked the world last week (ens25Sep09) when she went public with the decade-long incestuous relationship she had with her own father, The Mamas & The Papas star John Phillips.
She claimed her dad first molested her on the eve of her wedding to Sessler, when she was 19, and the sex eventually became consensual.
But the sexual humiliation continued in the early days of her marriage to Sessler, according to Randy Breitstein.
Breitstein claims he and his new wife were on their honeymoon in Los Angeles in 1979 when they met up with the couple and he was propositioned by Sessler during a drug-fuelled binge, reports the National Enquirer.
He says, "We did cocaine... all night... (Then Sessler) came right out and said, 'Do you want to swap wives tonight?' He was absolutely serious!"
The pal declined and admits he was shocked by the actions of the newlywed man.
He adds, "MACkenzie and Jeff had been married only a few weeks before. I don't think Jeff really loved her."
Phillips and Sessler divorced in 1981 after two years of marriage.