Lyrics:

I bet you didn't know,
You started off a chain reaction,
I saw no intention on your face,
It must have been some kind of chemical attraction.
I felt the spark, left a mark I can't erase. ( can't erase)

It likes oh, whoa,
Something like a bolt of lightning.
Oh, whoa,
It's going on inside!

[Chorus:]
'cause I'm burning up it ain't no joke,
And all my cells are growing old!
I got up in a place with no way out.
And it's my self-control goes up in smoke,
One more hit, I get so stoked that I,
I'm glowing in the dark,
You lit a fire in my heart!

(Fire in my heart...)
You lit a fire in my heart.
(Fire in my heart...)
You lit a fire in my heart.
(Fire in my heart...)

It was kicking at me, steady in my body, (in my body)
Until you pumped it up with gasoline,
You struck a match and just like that you got me,
Now I'm the brightest firework you've ever seen.

It likes oh, whoa,
No, there's no need to run for water,
Oh, whoa,
Don't ever put me out.

[Chorus:]
'cause I'm burning up it ain't no joke,
And all my cells are growing old!
I got up in a place with no way out.
And it's my self-control goes up in smoke,
One more hit, I get so stoked that I,
I'm glowing in the dark,
You lit a fire in my heart!

(Fire in my heart...)
You lit a fire in my heart.
(Fire in my heart...)

Oh, whoa,
so come and warm your hands around me.
Oh, oh,
I will light you up tonight.

[Chorus:]
'cause I'm burning up it ain't no joke,
And all my cells are growing old!
I got up in a place with no way out.
And it's my self-control goes up in smoke,
One more hit, I get so stoked that I,
I'm glowing in the dark,
You lit a fire in my heart!

[Chorus:]
'cause I'm burning up it ain't no joke,
And all my cells are growing old!
I got up in a place with no way out.
And it's my self-control goes up in smoke,
One more hit, I get so stoked that I,
I'm glowing in the dark,
You lit a fire in my heart!

(Fire in my heart...)
You lit a fire in my heart.
(Fire in my heart...)
You lit a fire in my heart!