The couple exchanged vows in a secret wedding four months ago.
Michael Phelps is a married man!
The 31-year-old Olympic gold medalist married his girlfriend, Nicole Johnson, on June 13, ET can confirm.
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The couple, who obtained their marriage license in Arizona, got engaged last February and took to social media to share the happy news. "She said, yes," Phelps wrote on his Instagram at the time.
In June, on the actual date of their wedding, Johnson posted a family photo with the caption, "Such a memorable night with my lil fambam boomer obviously didn't want to hold still."
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Phelps and Johnson welcomed their first child, Boomer Robert Phelps, in May and have shared many candid moments with their little bundle of joy.
For even more baby Boomer adorableness, watch the video below.