Tragic Friends star Matthew Perry's untold heartbreak has been exposed, and his ex Kayti Edwards has claimed one haunting 'regret' drove the addict A-lister to the brink. Perry's ex-girlfriend and former assistant Kayti has opened up about her own experience with the Hollywood star's tragic death and what she believes drove him to his early grave. Ranch worker Kayti dated the actor in 2006 before going to work as his assistant in 2011 and remaining friends with him right up until his death at 54 years old.

And as one of Perry's closest friends, Kayti has shared what she believes to be one of his biggest regrets, reveals the Mirror US. In an exclusive interview with The Mirror US, Kayti explained that looking back she believes Perry's break-up with girlfriend, Rachel Dunn, whom he dated from 2003 to 2005 was a 'big, big regret for him' and sparked his descent into addiction. In his memoir, he described her as 'the ex-girlfriend of his dreams'.

READ MORE: Storm Lilian wreaks havoc across Greater Manchester with fallen trees on roads, major tram disruption and festival postponed While Perry has dated many A-list celebrities throughout his years in Hollywood, including the beautiful and talented Julia Roberts, Gwyneth Paltrow and Cameron Diaz - Kayti felt he and Rachel shared a love that was unlike any others. And while they only dated for two years and never shared any children together, Perry included her as a beneficiary in his will, showcasing his life-long love for her. Perr.