Does anyone know who sings this country song with the chorus, "Don’t know what I did to deserve a love like th?

Does anyone know what the name of this song and artist is to this country song? I only caught the chorus which said, "Don’t know what I did to deserve a love like this, I must be doing something right."
It is the most beautiful song and I want to know what the whole song sounds like… PLEASE HELP!!!!!!!!!!!!!!! Thanks in advance…

Billy Currington’s song "Must Be Doin Something Right"

video

http://www.youtube.com/watch?v=F8-MrHesljE