Susan Sarandon had a relationship with David Bowie, it has been revealed.

The Thelma and Louise actress is best known for her 21-year relationship with fellow actor Tim Robbins, which ended in 2009.

But according to the latest revelation, five years before they got together Susan and David had a fling while filming the 1983 vampire flick The Hunger.

The affair was accidentally exposed by Susan’s co-star in the upcoming film Tammy, Melissa McCarthy.

“Melissa totally let the cat out of the bag,” a source close to Susan revealed according to The Daily Mail.

“'It has been thirty years and Susan has never publicly discussed her fling with Bowie so she was totally shocked when Melissa blurted it out openly.”

In Tammy, Melissa plays Susan’s granddaughter so she was the perfect choice to introduce her at the AARP's Annual Movies for Grownups Awards Gala in Beverly Hills where she was receiving a Lifetime Achievement Award.

But during her introduction, Melissa slipped up, saying, “Susan is so cool - I mean she dated David Bowie.”

'In putting it out like this, Melissa dropped it like a bombshell and meant no malice at all. The only thing about her remarks was that there was a huge room full of other celebs and cameras rolling,” the source added. “Thankfully Susan was not upset with Melissa, but she wished her old affair with David Bowie had remained private.”

While Susan took the slip up in her stride, the audience appeared stunned.

The source continued: “This affair happened a very long time ago when Susan and Bowie were both young and carefree. Susan has fond memories of the love affair, but throughout the years has kept it private. [Melissa] feels a little embarrassed now as she had no idea that Susan and David's relationship wasn't public knowledge.”