ST. LOUIS (CBS SF/AP) – Beyoncé has helped the boyfriend of one of her backup dancers “put a ring on it.”

The singer interrupted her performance of her hit “Single Ladies (Put A Ring On It)” in St. Louis on Saturday night to bring out choreographer John Silver, the boyfriend of dancer Ashley Everett. A fan video shows Silver taking the microphone from Beyoncé and asking Everett to marry him. After Everett said yes, Beyoncé offered her congratulations before finishing the song.

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In an Instagram video , Everett says that she “was totally shocked and surprised” and that it was the best night of her life.

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