Divorcing Angelina Jolie has really done a number on Brad Pitt.

The 52-year-old stepped out for the first time since the couple's split in September looking older and thinner than we've seen him in recent years.

MORE: Justin Theroux Shades Jennifer Aniston's Ex Brad Pitt on Instagram

The father-of-six spoke at a private screening for the film Moonlight, which is co-produced by his production company Plan B. Longtime friend Julia Roberts was also in attendance.

brad pitt splash

His reemergence comes just a few weeks after Life & Style reported that the actor's unpredictable temper was one of the main reasons why Angelina, 41, left him.

"Brad has engaged in a pattern of angry behavior," a source said at the time, referencing the Oscar winner's alleged physical altercation with his oldest son, Maddox.

MORE: Enter For a Chance to Win $1,000 Cash!

"She didn't pull the plug on this marriage because of one incident," the source added. "Look at the overall situation. This has been a long time coming."

Scroll through the gallery below for a look back at Angelina and Brad's most endearing quotes about each other.