Ben Affleck and Matt Damon once blew all of their hard-earned money on a party house and a flashy new car.

The then-aspiring actors lived together in Los Angeles and shared a bank account well into their 20s but mistakenly mismanaged their money after their first big break.

Affleck revealed on “The Drew Barrymore Show” Friday that he thought to himself when they sold the rights to their “Good Will Hunting Script” for $600,000, “‘We are now rich for life. My needs are over. I will never have to work again. I’m rich forever.'”

However, after paying their agent a $30,000 fee and coughing over $160,000 in taxes, both men were left with only enough funds to buy a Jeep Cherokee and spend the rest on a $5,000-a-month “party house.”

“We were broke in six months,” Affleck shared.

However, the “Argo” director, 50, doesn’t have any regrets about pooling all his money together with Damon, 52, because it was ultimately “really valuable.”

“We were friends, and we wanted each other to succeed, and we loved each other, so it seemed clear, like, ‘Let’s do this together,'” Affleck said.

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Splitting bills was not the only growing pain the duo had to navigate, though.

Affleck revealed earlier this month that Damon had a hard time cleaning up after himself.

The “Armageddon” star shared on “The Late Late Show with James Corden” that one day he walked into his shared apartment with the “Jason Bourne” actor only to find his roommate playing a Sega Genesis hockey game surrounded by “concentric circles of garbage,” including an old pizza box and leftover sushi that had “maggots.”

Damon — apparently clueless to the state of filth — purportedly told Affleck and his brother at the time, “‘Hey, what’s going on fellas?’”

The “Deep Water” star said his BFF is a “beautiful” and “brilliant” guy but concluded that he would “not suggest living with him.”