So Jennifer Aniston and Brad Pitt have been friends for years

Wait, what?

Jennifer Aniston’s 50th birthday party last weekend will undoubtedly go down as one of the most star-studded events of the year, with the guest list boasting A-listers from Courtney Cox, Lisa Kudrow, Gwyneth Paltrow, the Clooneys and Reese Witherspoon, to Kate Hudson, Ellen DeGeneres, Barbra Streisand, Laura Dern, Demi Moore, Orlando Bloom and Katy Perry.

Yes, everyone was there. But it wasn’t the presence of Reese or Ellen that got the world’s attention, instead it was Jen’s exes, with a number of them helping the Friends actor see in her birthday.

According to PEOPLE, Jen’s ex John Mayer was in attendance and while her ex husband Justin Theroux didn’t appear at the party, he did post a sweet tribute to his former wife on social media.

It was Brad Pitt and Jennifer Aniston’s friendship however that made the most news, with her first husband not only attending the LA bash, but also reportedly giving her a sweet present.

The former couple split in 2005 after five years of marriage and have not been seen together since, but following the party it has emerged that they are now good friends, reconnecting three years ago.

‘Brad contacted Jen after her mom died, and she was touched that he knew what a difficult time it was,’ a source told US Weekly. ‘Brad wishes he'd handled the end of their marriage in a more thoughtful manner. He asked for Jen's forgiveness a long time ago, and she gave it.’

Speaking of his attendance at Jennifer’s party, another source told E! News, ‘Someone extended the invitation to Brad to come to Jen’s party and he accepted.

‘He wanted to support Jen and it was a momentous occasion,’ the source continued. ‘But that’s the extent of it. It was a social evening with a lot of people who have been a part of her life. They definitely aren’t dating or on that path. They are friendly, but that’s it.’

Going on to talk about the former couple’s relationship, the source continued: ‘Brad and Jen talk or text once in a while. If something comes up like a birthday or a big occasion they will reach out and congratulate the other. They don’t talk or see each other all the time. They aren’t a big part of each other’s lives currently, but they wish each other well and have fond memories about the good times they had together.’

Move over Chris and Gwyneth – these two are ex goals.