"People Country" cornered TIM MCGRAW for their "True Stories Behind the Songs" special . . . and asked him how he and FAITH HILL ended up recording "It's Your Love".

He said, quote, "We were goo-goo-eyed . . . newly, grossly, disgustingly in love.  We had just started dating and were sitting on the back of the bus when somebody played the demo.

 "Instantly, I looked at Faith and said, 'We're going to do this song together.'  It was just that simple and quick."  He adds, quote, "At the risk of sounding even more disgusting, it's because we still feel that way after 15 years.  Most of the time.