Matthew Perry used to party with Bruce Willis and now prays for him every night - Yahoo Entertainment

Matthew Perry is looking backmost connected his chaotic partying days with Bruce Willis.

The Friends alum's memoir Friends, Lovers and the Big Terrible Thing takes fans down the scenes of the iconic sitcom and offers candid insights into the actor's struggles with addiction. But successful 1 chapter, titled "Bruce Willis," readers are fixed a glimpse of however the iconic enactment prima utilized to fto loose.

Perry, who got to cognize Willis during accumulation of their drama The Whole Nine Yards, reveals the brace would portion nonstop and that helium struggled to support his addictions astatine bay portion the Die Hard actor knew erstwhile to quit.

"But determination was a large quality betwixt Bruce and me. Bruce was a partier; I was an addict. Bruce has an on-off button. He tin enactment similar crazy, past get a publication similar The Sixth Sense and halt the partying and nail the movie sober," Perry writes. "He doesn't person the gene—he's not an addict."

Perry besides shared heartfelt moments with Willis that fto him spot the enactment star's "caring" side.

"Sometimes, astatine the extremity of the night, erstwhile the prima was conscionable astir to travel up and everyone other had gone, and the enactment was over, Bruce and I would conscionable beryllium and talk," Perry writes. "That's erstwhile I saw the existent Bruce Willis—a good-hearted man, a caring man, selfless. A fantastic parent. And a fantastic actor. And astir important, a bully guy."

Lee Celano/WireImage

Yet Perry laments the 2 mislaid interaction aft that, adding helium present prays for the ailing 67-year-old each night.

"And if helium wanted maine to be, I would beryllium his person for life. But arsenic is the mode with truthful galore of these things, our paths seldom crossed aft that."

He adds, "I, of course, commune for him each nighttime now."

It was revealed successful March that Willis was diagnosed with aphasia and would beryllium stepping distant from acting. At the time, Perry offered his enactment for the histrion successful a heartfelt post.

"Dear Bruce Willis, I'm truthful atrocious to perceive what you are going through, but you're inactive the coolest antheral I've met successful my full life," Perry tweeted. "You volition stay successful my prayers for a agelong long time."

"Maybe we should get unneurotic and ticker the full 10 yards and get a mates of hours of sleep," helium added, joking astir the 2004 sequel, which was critically panned and flopped astatine the container office.

Willis besides appeared alongside Perry erstwhile helium guest starred connected play 6 of the deed NBC sitcom successful 2000.

Friends, Lovers and the Big Terrible Thing is released connected Nov. 1.

Sign up for Entertainment Weekly's escaped regular newsletter to get breaking TV news, exclusive archetypal looks, recaps, reviews, interviews with your favourite stars, and more.

Related content:

• Matthew Perry watched from rehab arsenic ex-girlfriend Julia Roberts won her Oscar: 'I'll instrumentality you back'

• Matthew Perry wrote Julia Roberts a insubstantial connected quantum physics truthful she'd hold to prima connected Friends

• Matthew Perry reveals helium astir died aft his colon burst from cause overuse: 'I didn't cognize however to stop'