Ben Affleck, Matt Damon Have an 'Argument' Over Tom Brady -- In the Name of Charity

— -- Who does Tom Brady like more: Ben Affleck or Matt Damon?

One lucky fan could find out in person.

In a video debuting exclusively on "GMA" today to promote a new Omaze campaign, longtime friends Affleck and Damon have an "argument" over which of them the NFL quarterback likes better.

The argument –- conducted over video call -– is interrupted when Brady calls in.

The Omaze campaign offers one person and a guest the chance to win a night out in Boston with Brady, Affleck and Damon for as little as $10. The funds raised will support the stars’ individual charity initiatives -- Affleck's Eastern Congo Initiative, Damon's Water.org and Tom Brady's TB12 Foundation.

At the end of the video, Brady invites people to visit omaze.com/boston to enter, then adds: “I can’t wait to meet you and tell you which one of these guys I actually like better."