Saw the video of this song some minutes back. One of my favourite songs ever. Promptly googled the lyrics.

Smash Mouth - I'm a Believer (Shrek OST)

Thought love was
Only true in fairy tales
Meant for someone else
But not for me
Love was out to get to me
That's the way it seems
Disappointment haunted
All my dreams

And then I saw her face
Now I'm a believer
Not a trace
Of doubt in my mind
I'm in love
I'm a believer
I couldn't leave her
If I tried

I thought love was
More or less a given thing
But the more I gave the less
I got, oh yeah
What's the use in trying
All you get is pain
When I wanted sunshine
I got rain

And then I saw her face
Now I'm a believer
Not a trace
Of doubt in my mind
I'm in love
I'm a believer
I couldn't leave her
If I tried

What's the use in trying
All you get is pain
When I wanted sunshine
I got rain

And then I saw her face
Now I'm a believer
Not a trace
Of doubt in my mind
I'm in love
I'm a believer
I couldn't leave her
If I tried

Then I saw her face
Now I'm a believer
Not a trace
Of doubt in my mind
Now I'm a believer
Yeah, yeah, yeah
Yeah, yeah, yeah
I'm a believer
I'm a believer
I'm a believer