ONJ's Secret Bad-Boy Lover!

Olivia Newton-John has opened up on a sizzling love affair she once had with a mystery Hollywood superstar – but she’s refusing to name him! The 70-year-old Grease legend – who’s battling cancer for a third time – has shared her incredible life story in a new memoir, Don’t Stop Believin’.

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And the juiciest highlight in the tome is her confession about her secret hook-ups with a man she enticingly describes only as a “Hollywood bad-boy legend with a long list of girlfriends”.

Olivia did drop a few clues about the mystery Lothario, letting it slip she met him in a coffee shop and he asked her out.