It’s never easy when someone you know passes away.

Being famous doesn’t change that fact.

In reality, fame can only complicate matters further.

Cameron Boyce and Dove Cameron

When celebrities lose their co-stars, they may struggle to find the privacy to mourn.

Here’s a look at how these actors' lives were changed forever after a co-star passed away.

However, less than a year later, Monteith tragicallyoverdosed.

Lea Michele and Cory Monteith

In 2012, Michele even toldMarie Claire,“No one knows me better than Cory.”

“We were done.

We were it,” Michele said.

Paul Walker and Vin Diesel

When speaking withTodayin 2015, Diesel revealed he’d named his fourth daughter Pauline after his late friend.

Diesel told the outlet that he “knew [Walker] was there” when she was born.

The honor ensures that Walker’s memory will always live on in Diesel’s family.

Dwayne Johnson and Paul Walker

In 2019, Diesel shared an emotional tribute to Walker onInstagram.

In an interview withThe Independentin 2014, though, Johnson described the moment he learned about Walker’s passing.

He was driving with his wife Lauren Hashian when he started receiving messages on his phone.

Naya Rivera And Kevin McHale

Personal thing, but I prefer to keep our memories and bond private and quiet."

Nevertheless, Johnson noted that Walker’s death helped to remind him not to take life for granted.

Many took to social media to share their grief over the loss of their friend, asEntertainment Weeklyhighlighted.

Mark Hamill and Carrie Fisher

Among those vocal about the loss of Rivera was Kevin McHale, who starred alongside Rivera onGlee.

McHale penned a thoughtful tribute to his co-star onTwitter.

In anothertweet, he continued, writing, “I’m thankful she became like family.”

Daisy Ridley and Carrie Fisher

McHale also expressed that he “can not imagine this world without [Rivera].”

In an interview withThe Guardianin 2017, Hamill spoke candidly about his longtime friend and co-star.

She is simply irreplaceable."

Jake Gyllenhaal and Heath Ledger

According toElle, though, Ridley’s short time with Fisher was not necessarily wasted.

Among those closest to Ledger was Jake Gyllenhaal, Ledger’sBrokeback Mountainco-star.

Thus, of course, revealing just how important both their private friendship and professional relationship were.

Jai Courtney and Andy Whitfield

Ledger’s death also had a profound impact on the way Gyllenhaal views his career.

He toldNPR,“I’m trying to be present where I am.

Ultimately, in 2011, Whitfield lost his life to the disease.

Zachary Quinto and Anton Yelchin

In fact, Courtney is even the godfather to Whitfield’s children.

Courtney explained toColliderthat he learned a lot from Whitfield’s approach to life.

Zachary Quinto, Yelchin’s co-star in the rebootedStar Trekfilms, has been particularly candid about his grieving process.

KJ Apa and Luke Perry

AsBBC Newsexplained, Yelchin was fatally struck by his own car.

Quinto also said Yelchin’s death was a “terrible loss” both personally and for the industry.

Luke was really like his father his American father.

Michael Massee and Brandon Lee

He really assumed that role, so watching KJ grapple with that was really tough to watch.

As a mother, as just a person, it was hard to watch.”

I just miss talking to him.

Daniel Radcliffe and Alan Rickman

I miss listening to him."

Apa also said, “It made me really think.

What kind of man do I want to be?

Ethan Hawke and River Phoenix

And I’m still figuring it out.”

The projectile struck and killed Lee, and the terrible accident haunted Massee for his entire life.

Massee toldExtrathe shooting of the film went “tragically awry.”

Cameron Boyce and Dove Cameron

Massee also said, “Since then, I amveryconscious of the dangers of making a movie.”

As such, he grew up around actors like Michael Gambon,Maggie Smith, and Alan Rickman.

Radcliffe penned an emotional tribute honoring Rickman (viaYahoo!

Radcliffe also noted that, aside from being a talented actor, Rickman was a kind and supportive friend.

This, of course, revealed just how much of an impact Rickman had on his life.

Ethan Hawke, Phoenix’s co-star in 1985’sExplorers, was notably affected by the young actor’s passing.

That loss has stayed with Hawke throughout the years.

In 2016, Hawke toldVulturethat Phoenix inspired a chapter in his children’s book,Rules for a Knight.

I knew she would be the gentlest, and the most concise, whatever it was."

News, that they “want to make an effort.”