Why Liam Hemsworth decided it was time to file for divorce from Miley Cyrus

Liam Hemsworth is looking forward to a new start after his split from Miley Cyrus, a source tells ET.

The 29-year-old actor filed for divorce from Cyrus on Wednesday, citing irreconcilable differences. The court filing comes after Cyrus' rep confirmed on Aug. 10 that the two had separated after seven months of marriage, and after she was snapped kissing Kaitlynn Carter while on vacation in Italy in pictures obtained by ET.

A source tells ET that Hemsworth has now realized that it's "time to move on."

"Liam's decision to file for divorce is sad, but in the end, it was never going to work," the source says. "They are too different. Liam never wanted to share Miley with anyone. He loves her and he is far too traditional. He finally realized he just wants to start fresh."

"Liam has come to terms that it was time to move on," the source continues. "Liam's family has been incredibly supportive. They are relieved it's over."

28 PHOTOS
Miley Cyrus and Liam Hemsworth through the years
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Miley Cyrus and Liam Hemsworth through the years
WEST HOLLYWOOD, CA - MARCH 07: *EXCLUSIVE ACCESS, PREMIUM RATES APPLY* Liam Hemsworth and Miley Cyrus attend the 18th Annual Elton John AIDS Foundation Academy Award Party at Pacific Design Center on March 7, 2010 in West Hollywood, California. (Photo by Larry Busacca/Getty Images)
HOLLYWOOD - MARCH 25: Actress Miley Cyrus and actor Liam Hemsworth arrive at the Los Angeles Premiere 'The Last Song' at ArcLight Cinemas on March 25, 2010 in Hollywood, California. (Photo by Jon Kopaloff/FilmMagic)
LOS ANGELES, CA - APRIL 15: Miley Cyrus and Liam Hemsworth sighting on April 15, 2010 in Los Angeles, California. (Photo by Gustavo Munoz/BuzzFoto/FilmMagic)
LOS ANGELES, CA - JUNE 21: Miley Cyrus and Liam Hemsworth arrive at LAX airport on June 21, 2010 in Los Angeles, California. (Photo by Jean Baptiste Lacroix/WireImage)
SYDNEY, AUSTRALIA - JUNE 20: (EUROPE AND AUSTRALASIA OUT) American singer and actress, Miley Cyrus, with her Australian actor boyfriend Liam Hemsworth, shopping on Oxford Street, Paddington in Sydney, ahead of her Australian concert tour. (Photo by Justin Lloyd/Newspix/Getty Images)
LOS ANGELES, CA - DECEMBER 11: Actor Liam Hemsworth and actress/singer Miley Cyrus arrive at the 2011 CNN Heroes All-Star Tribute at The Shrine Auditorium on December 11, 2011 in Los Angeles, California. (Photo by Gregg DeGuire/FilmMagic)
LOS ANGELES, CA - JANUARY 11: Singer/actress Miley Cyrus and actor Liam Hemsworth arrive at the 2012 People's Choice Awards at Nokia Theatre L.A. Live on January 11, 2012 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for PCA)
LOS ANGELES, CA - JANUARY 11: Actress Miley Cyrus (L) and Liam Hemsworth arrive at the 2012 People's Choice Awards at Nokia Theatre L.A. Live on January 11, 2012 in Los Angeles, California. (Photo by Michael Buckner/Getty Images for PCA)
LOS ANGELES, CA - JANUARY 11: Actor Liam Hemsworth and Actress Miley Cyrus attends People's Choice Awards 2012 at Nokia Theatre LA Live on January 11, 2012 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for PCA)
BEVERLY HILLS, CA - FEBRUARY 26: Singer Miley Cyrus (L) and actor Liam Hemsworth attend the 20th Annual Elton John AIDS Foundation Academy Awards Viewing Party at The City of West Hollywood Park on February 26, 2012 in Beverly Hills, California. (Photo by Jamie McCarthy/WireImage)
WEST HOLLYWOOD, CA - FEBRUARY 26: Actor Liam Hemsworth and actress/singer Miley Cyrus attend the 2012 Vanity Fair Oscar Party Hosted By Graydon Carter at Sunset Tower on February 26, 2012 in West Hollywood, California. (Photo by Christopher Polk/VF12/Getty Images for Vanity Fair)
WEST HOLLYWOOD, CA - FEBRUARY 26: Actor Liam Hemsworth and singer Miley Cyrus arrive at the 2012 Vanity Fair Oscar Party hosted by Graydon Carter at Sunset Tower on February 26, 2012 in West Hollywood, California. (Photo by Mark Sullivan/WireImage)
LOS ANGELES, CA - MARCH 12: Liam Hemsworth and Miley Cyrus attends 'The Hunger Games' Los Angeles Premiere on March 12, 2012 in Los Angeles, United States. (Photo by Steve Granitz/WireImage)
PHOENIX, AZ - MARCH 24: Actress/singer Miley Cyrus (L) and actor Liam Hemsworth in the audience during Muhammad Ali's Celebrity Fight Night XVIII held at JW Marriott Desert Ridge Resort & Spa on March 24, 2012 in Phoenix, Arizona. (Photo by Michael Buckner/Getty Images for CFN)
Actor Liam Hemsworth kisses actress Miley Cyrus at their table at the Muhammad Ali's Celebrity Fight Night XVIII on March 24, 2012 in Phoenix, Arizona. Fight Night supports the fight against Parkinson's disease and this year also celebrates Ali's 70th birthday. AFP PHOTO / Robyn BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
CENTURY CITY, CA - JUNE 27: (EXCLUSIVE ACCESS SPECIAL RATES APPLY) Actor Liam Hemsworth and singer Miley Cyrus pose during Australians In Film Awards & Benefit Dinner at InterContinental Hotel on June 27, 2012 in Century City, California. (Photo by Michael Buckner/Getty Images for AIF)
LOS ANGELES, CA - JULY 16: Miley Cyrus and Liam Hemsworth are seen on Melrose Blvd. on July 16, 2012 in Los Angeles, California. (Photo by JB Lacroix/WireImage)
LOS ANGELES, CA - AUGUST 08: Actress Miley Cyrus and actor Liam Hemsworth attend the premiere of Relativity Media's 'Paranoia' at the DGA Theater on August 8, 2013 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
BYRON BAY, NSW - APRIL 29: Liam Hemsworth and Miley Cyrus seen on April 29, 2016 in Byron Bay, Australia. (Photo by Matrix/GC Images)
NEW YORK, NY - SEPTEMBER 15: Miley Cyrus and Liam Hemsworth seen out in Manhattan on September 15, 2016 in New York City. (Photo by Robert Kamau/GC Images)
NEW YORK, NY - SEPTEMBER 16: Liam Hemsworth and Miley Cyrus leave Catch on September 15, 2016 in New York City. (Photo by James Devaney/GC Images)
Actor Liam Hemsworth, from left, singer Miley Cyrus, former professional tennis player John McEnroe, and singer-songwriter Patty Smyth sit at a table during the Robin Hood Foundation's 'Love and Leadership' benefit in New York, U.S., on Monday, May 15, 2017. For 29 years,�Robin�Hood�has worked to get help to New York City's poor by burrowing deep into the pockets of its most affluent. Photographer: Amanda Gordon/Bloomberg via Getty Images
HOLLYWOOD, CA - OCTOBER 10: Actor Liam Hemsworth (L) and Miley Cyrus at The World Premiere of Marvel Studios' 'Thor: Ragnarok' at the El Capitan Theatre on October 10, 2017 in Hollywood, California. (Photo by Rich Polk/Getty Images for Disney)
LOS ANGELES, CA - OCTOBER 10: Liam Hemsworth and Miley Cyrus attend the premiere of Disney And Marvel's 'Thor: Ragnarok' on October 10, 2017 in Los Angeles, California. (Photo by Todd Williamson/Getty Images)
BEVERLY HILLS, CA - MARCH 04: Miley Cyrus and Liam Hemsworth attend the 2018 Vanity Fair Oscar Party Hosted By Radhika Jones - Arrivals at Wallis Annenberg Center for the Performing Arts on March 4, 2018 in Beverly Hills, CA. (Photo by Presley Ann/Patrick McMullan via Getty Images)
BEVERLY HILLS, CA - MARCH 04: Miley Cyrus (L) and Liam Hemsworth attend the 2018 Vanity Fair Oscar Party hosted by Radhika Jones at Wallis Annenberg Center for the Performing Arts on March 4, 2018 in Beverly Hills, California. (Photo by Jon Kopaloff/WireImage)
CULVER CITY, CA - JANUARY 26: Honoree Liam Hemsworth (L) and Miley Cyrus attend the 2019 G'Day USA Gala at 3LABS on January 26, 2019 in Culver City, California. (Photo by John Sciulli/Getty Images for G'Day USA )
CULVER CITY, CA - JANUARY 26: Honoree Liam Hemsworth (L) and Miley Cyrus attend the 2019 G'Day USA Gala at 3LABS on January 26, 2019 in Culver City, California. (Photo by John Sciulli/Getty Images for G'Day USA )
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According to the source, Hemsworth wants to make the divorce a quick one to avoid any negativity.

"At first, Liam wanted to just give it time but he finally felt like things were getting nasty and he didn't want to drag it out publicly," the source says of his decision to file the official paperwork. "He decided it was all too much."

Meanwhile, a second source also says Cyrus did not try to save her marriage, despite reports claiming she wanted to work it out with Hemsworth.

Clearly, the two stars have a lot of history together. Hemsworth and Cyrus had been dating on and off since meeting on the set of their 2010 film, The Last Song, before tying the knot last December in an intimate ceremony. A source previously told ET that Hemsworth was "heartbroken" that Cyrus had now moved on "so quickly and so publicly."

"Liam loves Miley and is crushed by all of this," the source said. "But right now Miley doesn't want to answer to anyone. She still feels the need to explore herself, her sexuality and her music. Miley has been working in the studio and wants to blow off steam."

15 PHOTOS
Miley Cyrus and Kaitlynn Carter's trip to Italy
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Miley Cyrus and Kaitlynn Carter's trip to Italy
rock the boat, don’t rock the boat baby ⚓️
So much Versacheeeeee @versace 🖤
Girls Trip 🇮🇹
Mute me if you don’t want SPAMMED
Sister Sister 💜
noi siamo Italiani ora 😊🇮🇹
ROCK THE BOAT ❤️ 🇮🇹 ❤️🇮🇹
BOOM
Throne 👑
photo me PRONTO 💦
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-- Reporting by Adriane Schwartz

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