United Kingdom, May 11 -- Hayden Panettiere has reflected on a terrifying experience of being put into bed with a "very famous man" when she was only 18 years of age.

The 36-year-old actress has revealed in her memoir This Is Me: A Reckoning that she was coerced into getting in bed with the "undressed" older celebrity whilst on a boat and has explained during an appearance on Jay Shetty's On Purpose podcast that she now knows how naive she was about the severity of the situation.

Shetty said: "You write about a moment in your career where a friend of yours takes you onto a boat. You're led to a room which has an older man in it and then basically told to perform sexual acts."

Hayden, who recently came out as bisexual, responded: "The f...