The Hollywood couple are said to be still negotiating the terms of their divorce, with Pitt largely staying out of the limelight.
But reports claim that the Fight Club actor is “excited” and “happier and healthier” following the break-up.
An insider told PEOPLE: “The separation was very dark for him, but lately he looks healthier and happier.
“He seems excited about life.”
Another source revealed to E! Online that Pitt has started to “enjoy being out more”.
They said: “He has an active social life and has rekindled old friendships.
“He goes out to dinner a lot and enjoys being out doing different things.”
Standard Online has contacted a representative for Pitt for comment.
Pitt has six children - Maddox, 16, Pax, 14, Zahara, 13, Shiloh, 11, and twins Knox and Vivienne, nine - with Jolie.
The pair met on the set of 2003 hit Mr & Mrs Smith while Pitt was still married to actress Jennifer Aniston, from whom he later divorced in 2005.