i should ve cheated lyricsWho did Taylor Swift write her song "You Should've Said No" to?

I saw a video and Taylor Swift said that she wrote the song to her ex bf who cheated on her. She also said that she has the name of the guy in her first album. In the lyrics section of "i should ve cheated lyrics;You Should've Said No", there are some capital letters and if you put the capital letters together, it will spell the guy's name. I don't have her first album, but if you do you shouldi should ve cheated lyrics try it to see if it will work. Tell me if you find out who it is. Thanks! :D
In the lyrics book the secret message says: Sam, Sam, Sam, Sam
I think its a guy called Sam :)