Matt Damon Dumps Best Pal Ben Affleck Amid Rehab Drama, Source Claims

While Ben Affleck fights his demons in rehab, one person who will not be by his side is his former best friend, Matt Damon.

Sources told Rob Shuter, host of Straight Shuter! Naughty But Nice, that while the two, who grew up together around Boston, were once tight, their relationship has deteriorated.

“Matt will always love Ben and thinks of him like a brother," said the source, who noted "sometimes you have to step away to let people save themselves.”

Damon’s currently “focused on his wife and his family” and “his partying days are long, long behind him,” said the source, “but Ben is still living in the fast lane.”

Despite their growing distance, Damon, 47, and 46-year-old Affleck “will always have each other’s backs,” but at the moment they just don’t talk that much at all and rehab is something Affleck “is going to have to do all alone.”

However, as RadarOnline.com previously reported, one person did stick around: Affleck’s ex, Jennifer Garner.