Christina Aguilera had a good Valentine's Day: She announced yesterday that she's engaged to Matt Rutler, her boyfriend of three years, Radar reports. Aguilera, 33, posted a photo to Facebook of her and Rutler holding hands on the beach—and her hand is sporting a huge ring. "He asked and I said..." reads the caption. Aguilera was previously married to Jordan Bratman, with whom she has a 6-year-old son. (As they say, the couple who gets arrested together stays together.)