The 'Thor' co-stars have played on-screen brothers since 2009, and at the time Chris told Collider: “It’s quite literally a bromance. The fact that we get along, we just egg each other on. We raised each other’s game. We just had a really, really good time.” While filming ‘Thor: The Dark World’ in Iceland, the pair even lived together. Tom revealed: “Chris and I used to live in a small house at the foot of a volcano. We cooked tasty dishes, chatted all night long, and drank wine. We had so much fun!”

From roommates to lifelong friends, Jennifer Aniston and Courteney Cox met on the set of ‘Friends’ in 1994 and have remained close ever since. In their almost 30 years of friendship, the two have always been there for each other. During a 2014 interview with More magazine, Jennifer revealed: “I’ve slept in her guest bedroom a lot. Without giving away too much of my private stuff, all I can say is she’s been there for me through thick and thin.” Jen is even godmother to Courteney's daughter Coco.

'The Great Gatsby' co-stars met at an audition in the 80s, when they were just up-and-coming actors, and have remained friends ever since. According to Leo, he was on his way home from school with his mother one day and recognised someone from an audition. The ‘Titanic’ actor told Esquire in 2014: “I literally jumped out of the car. I was like, 'Tobey! Tobey! Hey! Hey!' And he was like, 'Oh, yeah — I know you. You're ... that guy.' But I just made him my pal. When I want someone to be my friend, I just make them my friend."

'The Edge of Love' co-stars have long been spotted on red carpets together, since they first met on the set of the 2008 biopic. During a 2014 interview with Vogue, Keira revealed how the actresses became such close friends. She said: “I'd just broken up with a boyfriend. And she decided getting drunk and making total fools out of ourselves was the only way through. She was totally right.”

'The Office' co-stars dated during filming of the mockumentary but subsequently decided that they were better off as friends. Mindy revealed in 2019 that B.J is now a part of her family. The actress said: “The truth is that B.J. is so much more like family now than a platonic friend. He’s the godfather to my daughter. He comes over like once a week. Sometimes he’ll come over just to hang out with her.”

'The Avengers' co-stars have been in several MCU films together and their friendship shows no signs of slowing down. The pair first worked together in 2004’s ‘The Perfect Score’ and Scarlett revealed that their off-screen friendship makes working together on scenes so effortless. The actress told Entertainment Weekly in 2020: “It’s really a result of 10 years of knowing somebody and being able to have a kind of intimacy with them that I think you get from just spending a lot of time with somebody and knowing their soft underbelly.”

The Hollywood A-listers became friends while filming ‘Titanic’ back in the 90s, and haven’t been shy with their support for each other since. In February 2016, Kate told Vanity Fair: “I feel very strongly that it may possibly be Leo’s year. He is my closest friend in the world and I just couldn’t imagine not being there to support him."

The actresses first met on the set of ‘Game of Thrones’ where they played sisters Sansa and Arya Stark and quickly became close friends. They were lovingly referred to as “Mophie” by their fans, and even have matching tattoos. At Sophie's wedding to Joe Jonas in 2019, Maisie was her maid of honour.

The 'Charlie's Angels' co-stars were pals long before they both starred in the 2000 action movie, but that shoot cemented their friendship for good. During a 2016 interview, Drew spoke about her friendship with Diaz, saying: “If you’re looking for the best dinner-cooking partner and watching-TV-on-the-couch friend, call her. If someone is in a medical situation, call her! She’s the most loyal, fierce, fun, cosy friend. We have incredible honesty with each other and we work hard on our lives and our friendship.”

The two actors first became close whilst they played on-screen lovers in 'The Object Of My Affection'. They later reunited when Rudd joined the cast of 'Friends' and again in 'Wanderlust'. Aniston said of their friendship: "I love him. He is a dear friend. We just have a true affection for each other and I just feel honored any time I get to work with him."