song from forever 21 is killing me,can't find it!

the lyrics go something like
"we can't change the past,but i don't look back" and she repeats 'I DON'T LOOK BACK" a lot.it's a women singing,and the song is kind of dance type...
i would so appreciate the help!
thanks!

here's my suggestion:
Robyn ft Kleerup - With every heartbeat
youtube: http://www.youtube.com/watch?v=CegiU4ZGlA0

oh my god!!!!!that's it!!!!!!thank you!

You're welcome