Or what's your song with your current significant other?
I have to be honest. I can never remember what mine is. I know Deanna Carter sings it..
That's How You Know It's Love by Deanna Carter:
Since no one on the planet has ever heard that song, my original suggestion (and the song that secretly I consider "our song" because it reminds me of Nicole...and you actually hear this one on the radio) is:
Somebody by Depeche Mode: