We have to admit—we were a bit surprised when we heard the news that Robert Pattinson and FKA twigs had become engaged to be married earlier this week. After all, the super private couple began dating only six months ago. Talk about a whirlwind romance! And although quick engagements aren't the most common, Pattinson and his bride-to-be aren't the first celebrity couple to make it official after only a short time together. From Sofía Vergara and Joe Manganiello to Naya Rivera and Ryan Dorsey, click through our gallery to see all the celeb couples from the past year who have had whirlwind romances. Hey, when you know, you know.