Here's the moment a 'first dance' was interrupted by a wedding crasher

Sadie and Adam Dajka were having a moment. They'd been married just moments prior on the beach and were enjoying their first dance. "What's Mine is Yours" by Kane Brown played in the background. Guests watched and wiped away tears.

And then they spotted him.

"I heard my little sister, my matron of honor day, 'what are you doing,' and then he was dancing next to us," Sadie Dajka, the bride, told "Good Morning America."

Dajka said she knew the stranger was a wedding crasher "instantly. It was a small intimate wedding, we knew every person there," she said.

Good thing the couple has a sense of humor. And "Wedding Crashers" happens to be one of the bride's favorite movies.

"I just started laughing. I mean what else can you do in that situation," she said. Adam Dajka was still in shock but, "I started laughing soon too," he told "GMA." "I was mostly worried about her reaction."

The bride's father and two older brothers attempted to escort the man out, Sadie Dajka told "GMA," but he snuck back in. All the while, Sadie and Adam danced away, determined not to be distracted by crasher.

The wedding photographer, Val Ritter of VR Vision Photography, caught the couple's reactions. She told "GMA" the man had crashed another wedding going on upstairs prior to coming to the Dajka reception.

Neither the Dajkas nor their guests called the police, they said, but the man was reportedly arrested and taken away from the Grand Plaza Hotel in St. Pete Beach, Florida, where the wedding reception was held.

Adam Dajka sees the bright side of the incident. He said, "it made the experience even more memorable."