According to BuzzFeed, Biden performed the same-sex wedding of two White House staff members, Brian Mosteller and Joe Mahshie, about 4 p.m. Monday at the vice presidential residence. It was his first time officiating a wedding, the outlet reported.

"Proud to marry Brian and Joe at my house," Biden wrote. "Couldn't be happier, two longtime White House staffers, two great guys."

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Biden's wife, Jill, also shared the photo, tweeting, "Love is love!"

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