Search: i've got a mad little crush on you
Why: I just saw that ad. It's catchy.
Answer: "Hey Na Na" by Katie Herzig! Buy it here on iTunes!
The More You Know: Lyrics go like:
I've got a little secret too
I've got a mad little crush on you
I wonder if you notice, wonder if you see
I wonder if you ever want to dance with me
We shall never talk about such things, such things
And oh, before you go, before you go
Let me just take one last glance love
Oh, before you go, before you go
Could you tell me what's my chance love