Los Angeles - Ben Affleck joked he has "good sex" with Matt Damon to maintain their fabulous friendship.
The 44-year-old actor grew up with the Bourne Identity star and says the secret to keeping their 35-year long friendship "fresh" is by being able to joke with each other, especially about what goes on behind closed doors.
Speaking to ET Canada, the Argo star said: "You know Matt and I, we just we have good sex. That's what keeps it fresh."
The pair shot to fame together in 1997 when they made Good Will Hunting, and have said previously that they'd love to work together again in the future. However Matt, 45, says they never seem to have enough time available to think about a project together.
He said previously: "I would love to write another script with Ben; I love Ben, I love his work, he's been my buddy for 35 years. The big issue is time for us. We have a company together so we work on a lot of projects together, but to try to carve out the time is really tough."
Currently, Ben is busy promoting his new project The Accountant, before he moves on to tackle the DC Comics universe by writing, directing, and starring in a standalone Batman movie.
Top that off with his portrayal of the Caped Crusader appearing in the upcoming ensemble movie Justice League, and it's easy to see why he has no time to make a movie with his best friend.