"Jen and Justin have gone their separate ways and really closed that chapter of their lives", an alleged source revealed recently. "But it didn't seem like that big of a deal to Jen".
In fact, he took to Instagram on Monday, February 11, to show her some love.
"[She did] call him the day after the party to thank him for coming".
"The important people in her life gathered to celebrate with her", an insider told People. Even Aniston's ex-husband, Brad Pitt, was on hand to toast to the birthday girl. "Neither of them is pining for each other but instead, finding themselves again".
Aside from the Witherspoon, Aniston's star-studded 50th birthday party was also attended by Gwyneth Paltrow, Aniston's ex John Mayer and the musician's ex Katy Perry, People reported. Hudson, 39, notably shared a joyful collection of photos of herself - drink in hand - as she posed with Aniston and Paltrow, 46.
Entertainment Tonight reports the Oscar victor came because he "wanted to support" his ex-wife, as the two have always "been friendly" toward each other even after their split, a source said.
Brad and Jennifer were married from 2000 to 2005 with the Wold War Z actor going on to date Angelina, 43, soon after.
At the same time, Friends TV series starlet Jennifer Aniston also had a rough time following her split with Justin Theroux. Jolie and Pitt, who share six children, are still finalising their divorce and custody agreement.