Olympian Gabby Thomas is engaged! The 28-year-old gold medalist said "yes" to forever with Spencer McManes, she announced in an interview with Vogue on Tuesday, March 25. The couple posed for professional photos, with Thomas showing off her gorgeous diamond ring. She told the magazine that "normally," McManes, 29, is "very bad with surprises," but the Kaviva brand founder maintained an element of surprise when popping the question. "This was the one surprise I think I've ever witnessed him keep," she said. McManes popped the question on the rooftop of an Airbnb the couple rented for a staycation in Austin, Texas, according to Vogue, complete with a photographer and Thomas' best friend present for the big moment. “That's when I realized, ‘Oh my gosh, this is happening,” she told Vogue. Thomas, a Harvard alumna, joked with the magazine that she "fell in love with him despite the fact he went to Yale," her alma mater's rival, and shared how their love story started on social media. The couple was introduced through mutual friends who thought they'd get along in 2021. When Thomas followed her now-fiancé on Instagram — impressed with his "quality content," including a highlight of pizza reviews — he "immediately" sent her a DM. McManes eventually asked Thomas on a date in 2022 and told Vogue their first meeting at a speakeasy lasted over three hours. Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories. Supporting Thomas in her track-and-field career has brought the couple closer together, especially after the 2024 Paris Olympics, they told the magazine. McManes said he spent time "learning more about track and how to be a good partner to a professional track athlete" when things became serious with Thomas. And when she won the gold medal in the 200-meter final, McManes was there to celebrate her. In a post on Instagram after her big win, he said he "could not be more proud" of her. "You’re not only a world-class athlete, but also a world-class friend, teammate and girlfriend," he wrote in the August 2024 caption. "I love you and will never get tired of calling you a 3-time Olympic Gold Medalist." McManes told Vogue that he and Thomas "grew closer through" the Paris Games. “Last season helped us solidify our relationship and work really well as a team through the ups and downs."