Chris Pratt and Anna Faris shocked the world on Sunday when the two announced they were separating after eight years of marriage.
Dubbed as one of Hollywood's cutest couples, it was hard to believe the news was true. But after listening back to interviews Faris, 40, and Pratt, 38, gave over the past few years, it seems their marriage may not have been as picture perfect as it appeared on the outside.
ET's uncovered the former couple's most revealing discussions from 2014 to the present. Here are the three big issues that may have led to their split:
WATCH: Looking Back at Chris Pratt and Anna Faris' Cutest Moments of 2017
1. Too much time apart
In September 2015, Pratt traveled to Atlanta, Georgia, to begin filming Passengers with Jennifer Lawrence, one day after he wrapped The Magnificent Seven. The film, released in December 2016, followed the story of two people awakened 90 years too soon from an induced hibernation on a spaceship. Pratt spent months in Atlanta shooting the science fiction film, while Faris stayed at their home in Los Angeles with their 4-year-old son, Jack.
"I take pride in how great my relationship is with Chris, but, having said that, of course, in this crazy world where he's off doing movies and I'm in L.A. raising our child, of course I'm going to feel vulnerable, like any normal human would," she said during one of her Anna Faris Is Unqualified podcasts.
Pratt confirmed he and Faris had been apart for quite some time during a December 2016 interview with Sway Calloway on the SwaysUniverse radio show.
"I've been on the road for a long time," he admitted. "I really have been lacking human contact."
"It's just [Jen] and I primarily the whole movie, 16, 17 hours a day hanging out and, man, we got along so well," he continued. "We were immediately fast friends and I feel like I made a lifelong friend. [Anna] came to the set a couple of times. She was doing her show, Mom, back in L.A., but her and Jack would come to set and hang out. Jen and Anna got along really well as well."
MORE: Anna Faris On 'Tricky' Chris Pratt Relationship Weeks Before Split, Plus Everything They've Said About Marriage
2. Faris' feelings of insecurity and loneliness
Faris has never been shy about admitting her struggles with confidence, which may have been another factor that led to their split. "I mostly feel scared just going out without makeup on," she told Health in 2015. "But at the same time, I don't want it to force a lifestyle change. [Chris] makes me feel really beautiful even when I'm feeling disgusting. I'll be in boxer shorts and a grubby T-shirt with greasy hair, and he'll still be like, 'Whoa, honey. Whoaaa.''
Flash forward to August of that year when a tabloid report surfaced claiming Faris was concerned Pratt was going to cheat on her with Lawrence. "I had always kind of believed that part of the rumors of celebrity couples were sort of true because they had never been part of my life," she told Us Weekly at the time. "I was like, 'Oh, maybe there's a kernel of truth to that.'"
The same month the movie was released, rumors continued to swirl, and Faris admitted on her podcast that the reports about Pratt and Lawrence's alleged flirty relationship on set made her feel "insecure."
WATCH: Jennifer Lawrence Details Anxiety Over Filming Sex Scene With Chris Pratt
"I just remember feeling so hurt in a way that bothered me because I didn't want to think of myself as somebody that could be affected by tabloid s**t," she confessed. "There's a picture of me walking alone on the beach -- aging Anna Faris, alone on the beach."
"It did make me feel like, 'Is public perception -- even though it's false -- is there a grain of something?'" she added. "It made me feel incredibly insecure."
Then, in January 2016, the Mom star explained to her podcast listeners that sometimes drunk people randomly ask her, "How do you feel when your husband is kissing somebody else onscreen?"
"I feel like it's only really weird when other people think that that it's really weird," she explained. "Then I get nervous."
And during her latest episode, released last month, she admitted to putting on a façade in public.
"I play a character, like Mom or in movies, but I also play a public character," she said. "But there's definitely -- there's a loneliness and, like, an internal element to being a performer."
"I play a public character," she continued. "I laugh loud sometimes, maybe like too loud, but it is a public character sometimes. Like, if I have a red carpet thing, which I'm never comfortable but I'm always like, 'Go.' Ahh, but it never feels like me."
Faris echoed those sentiments just three weeks before the split, telling People, "There are two different roles that you play -- the one on-camera and the one in public. That's the tricky part."
WATCH: Anna Faris Dishes on Son Jack's First Red Carpet: 'He Loves Attention Just Like Mommy'
3. Pratt's meteoric rise to fame
Pratt and Faris first met in 2007 at the table read for Take Me Home Tonight, in which their characters played love interests. At the time, Faris was considered the more popular actor, thanks to her starring roles in films like Scary Movie, The Hot Chick and The House Bunny. Pratt was just starting to gain recognition for his hilarious portrayal of Andy Dwyer on Parks and Recreation.
"I've had those moments, where I was like the guy holding the purse at events and people just looked right through me," Pratt told GQ in 2015. "And, you know, actors come up and just blatantly hit on my wife in front of me and don't even look at me. I'm like, 'What the f**k, dude?'"
"I think it's something you have to manage," he added. "It's a little different, because she's achieved enough to hang her hat on for her life, anyways. She's done really amazing things. She's always gonna be known for really funny and great work, critically acclaimed work and successful stuff."
But in 2014, everything changed when Pratt portrayed Peter Quill in Guardians of the Galaxy. Since then, he's starred in films like Jurassic World and the Guardians sequel and it became apparent their star power had shifted.
"Now that Chris is, like, a crazy huge movie star, going out is just a whole different thing," Faris told Us Weekly in 2015. "It's just a whole different weird. We look at each other sometimes and we're like, 'Oh, my God.' Because it feels very surreal sometimes, since we both grew up in Washington State."
WATCH: Chris Pratt and Anna Faris Announce Separation After 8 Years of Marriage
Faris brought up the shift in fame again during an interview with The Huffington Post in January 2016.
"The other day, I was picking [our son Jack up] from his preschool and there was some paparazzi," she said. "That doesn't happen very often. When Chris is around and in town it's different, but Jack waved at them and said, 'Cheese!'"
Hear more in the video below.