Workers at an Amazon fulfillment center in Madrid, Spain, showed off their dance moves in a video that even caught the attention of CEO Jeff Bezos. And, despite the rise of automation in such facilities, the dancers didn’t even have to do the robot.

Bezos tweeted the video on Wednesday in which a flash mob of 700 associates performed a routine to celebrate the start of the busy Christmas package season. But one participant wasn’t entirely hip to the real reason everyone gathered until the very end.

“We have met here and we will never forget what has happened to us here,” a man says as he takes the hand of a surprised woman. “In front of everybody I want to say, that I love and you, and you are the woman of my life.”

The man then proposes and the woman accepts, saying “I love you” in front of their cheering co-workers.

“Love it!” Bezos tweeted.

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