Cue the love puns: It was a memorable US Open yesterday for Martina Navratilova, who got engaged in a very public way. As People reports, the tennis great, 57, was being interviewed when she announced she would be doing the questioning, and got down on one knee and asked girlfriend Julia Lemigova to marry her. A few tears, a yes, and some champagne followed. The whole thing was broadcast on the Jumbotron at Arthur Ashe Stadium. "I was very nervous," Navratilova told the AP. "It was kind of an out-of-body experience. You've seen people propose at sporting events before, in movies, in real life. Here it was happening to me. It was like I was watching myself do it." The couple plan to marry in Florida. (More Martina Navratilova stories.)