Shirley MacLaine claimed that she had affairs with all of her leading men except for Jack Nicholson and Jack Lemmon. MacLaine was in a 28-year open marriage.

Fotos International/Getty Shirley MacLaine has always been one of our more candid and ... She writes about her "first love," George Huvos, whose marriage proposal she turned down in order to pursue her dream of stardom as a dancer (yes, dancing ...

One leading man that she certainly didn't have a relationship with might surprise fans, due to his own high profile love life. Shirley claimed that the only two leading men she didn't fall in love with were Jack Lemmon, who she said was "like a sister to me," and Jack Nicholson. She famously worked with the latter on Terms of Endearment.