Their star power skyrocketed 20 years ago when Matt and Ben took home their first Oscar together for Best Original Screenplay in 1998 for Good Will Hunting.
"Matt is on a mission to reinvent himself in Hollywood," sources told OK! exclusively.
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"He feels like he's been dragged down over the last year because of his close association with Ben and all of his baggage," said an insider.
Now Matt has been spending a lot of time with another Hollywood heartthrob, who is described as "wholesome as they come," according to the insider.
Pick up the latest copy of OK! on newsstands now to find out which A-list actor Matt has been hanging out with!