Jennifer Aniston is said to be worried that Friends co-star Matthew Perry's up-coming tell-all book will reveal personal details about her failed romance with Brad Pitt.
The actor, who played Chandler Bing in the iconic sitcom, has revealed his memoir titled Friends, Lovers, and the Big Terrible Thing is set to be released in November this year.
Announcing the news to his 7.8 million Instagram followers earlier this month, Matthew said: " So much has been written about me in the past. I thought it was time people heard from me. The highs were high, the lows were low.