Brad Pitt Is "Much Happier" and "Charming" Again After Split with Angelina Jolie

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An insider has revealed to PEOPLE that Brad Pitt is 'more like the old happy and charming Brad' a year and a half after his split from Angelina Jolie.

The source added:

"Separating was very sad and shocking to him, but he started taking care of himself again," "He seems much, much happier."

He's rumored to be dating MIT professor Neri Oxman

source