Ben Affleck and his daughters also got to go backstage to meet Taylor Swift

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Ben Affleck scored some major cool points with daughters Violet, 9, and Seraphina, 6, when he took them to Taylor Swift‘s final 1989 tour concert in Los Angeles on Wednesday night.

The special evening was taken to the next level when Affleck and the girls went backstage to meet Swift.

“The girls had been really wanting to go,” a source tells PEOPLE. “He was super excited to be there with them. They had a great time.”

Of course, the other concertgoers couldn’t help but notice the actor walking around the venue.

“Just met @BenAffleck or should I say Batman at @taylorswift13 #1989WorldTour,” tweeted one lucky fan who scored a selfie with Affleck.

“He was with his daughters, I ran into him while he was waiting outside of the restroom for his kid,” a source tells PEOPLE. “He was very nice, taking pictures with a few people.”

The concert ended up being one for the books, as Swift saved some of her most impressive guest appearances for last.

As Affleck and his daughters looked on from the crowd, Swift sang duets with the likes of Selena Gomez, Lisa Kudrow and Justin Timberlake.

Timberlake was a familiar face for Affleck. The two starred in the 2013 film Runner Runner together.

This marks yet another fun L.A. outing for Affleck and his kids. Their mom, Jennifer Garner, is currently finishing production on Miracles from Heaven in Atlanta.

“He’s happiest when he’s with his family,” a source told PEOPLE of Affleck.