Anyone know what song these lyrics are: "I loved you once I can't love you twice..." (more in details)?

I heard this song on a clip and I think its called My Heart has a Mind of Its Own, but the ones I downloaded don't have these lyrics and are significantly different. Its a light background music with her singing ina higher tone:

"I loved you once, I can't love you twice. My heart keeps telling me this is good advice. We had it all then, started to stop. We can fall in love again... Love is a feeling that you can't explain my heart is a mind of its own, my heart has a mind of its own"