Taylor Swift had to sit in public last night and look happy as John Mayer cozied with Katy Perry at the Grammy's last night. Any woman knows this takes tremendous grace and courage to not seeth watching your once man look so happy with someone else. Taylor smiled, danced and seemed like she was having a good time. Don't you wonder if her tummy was a wee bit in knots knowing John and Katy were just a few seats away? Doesn't it make you wonder with all of Taylor's stunning looks, hit music, band rocking success that love escapes her?