[Verse 1]
If you only knew
I'm hanging by a thread, the web I spin for you
If you only knew
I'd sacrifice my beating heart before I'd lose you
I still hold onto the letters you returned
'Cause I've lived and learned

[Chorus]
'Cause it's 4:03 and I can't sleep
Without you next to me, I toss and turn like the sea
If I drown tonight, bring me back to life
Breathe your breath in me
The only thing that I still believe in is you
If you only knew

[Verse 2]
If you only knew
How many times I counted all the words that went wrong
If you only knew
How I refuse to let you go even when you're gone
I don't regret any days I spent
Or nights we shared, or letters that I sent

[Chorus]
'Cause it's 4:03 and I can't sleep
Without you next to me, I toss and turn like the sea
If I drown tonight, bring me back to life
Breathe your breath in me
The only thing that I still believe in is you
If you only knew
If you, if you only knew
[Bridge]
I still hold onto the letters you returned
'Cause you helped me live and learn

[Chorus]
'Cause it's 4:03 and I can't sleep
Without you next to me, I toss and turn like the sea
If I drown tonight, bring me back to life
Breathe your breath in me
The only thing that I still believe in is you

[Outro]
Believe in is you
I still believe in you, oh-oh, oh-oh, oh-oh-oh
If you, if you only knew