Did lovebirds Katy Perry and John Mayer became engaged on the most romantic day of the year?! Oh, we can't wait to see Katy walk down the aisle again and if the rumors is to be believed, it might happen quite soon as well. As they left Vincenti Ristorante in L.A on Thursday, the 28-year-old Perry sported a noticeable ruby ring on her wedding ring finger. It has to be what we think it is, right? She sure wasn't wearing any rings at the Grammys on Sunday! We are uncertain and excited at the same time... What do you think? Did John propose on V-day? (perezhilton)