Aryna Sabalenka and her boyfriend, Georgios Frangulis, revealed their engagement to the world on Wednesday, March 4, and the tennis star admitted she wasn't prepared for the surprise proposal. Sabalenka, 27, shared a video of herself showing off the ring via her Instagram Story, adding some lighthearted commentary. "Well, I obviously had no idea this was happening tonight," she wrote over the Story. "All good guys, everything happened," she said in the video. "But just look how I look.