Caitlyn Jenner, Steven Tyler and Darius Rucker also showed up to support the Starkey Hearing Foundation, which brings hearing aids to people in need in the U.S. and around the world

Affleck's weekend appearance comes after he was spotted on several dates with Shookus last week. "It is early on in the relationship but they are very happy together," a source close to Affleck told ET. Another source added, “Ben and Lindsay’s relationship is new and they are taking it slow."