Sister lyrics

You've always told me
If I ever wanna live
If I find a better girl
Someone who lets me breathe

That you wouldn't stand in my way
Oh girl, I never meant to break your heart

I, I promise you
I didn't know, oh no
She was your sister
Sister
What could I do
She is so dope, oh yeah
I couldn't resist her
Your little sister

And who would've thought
She's really that young
Unlike you, kisses good with her tongue
Oh please don't stand in my way
I guess it really doesn't matter if
If I break your heart
[ Lyrics from: http://www.lyricsmode.com/lyrics/0-9/2gether/sister.html ]
I, I promise you
I didn't know, oh no
She was your sister
Sister
What could I do
She is so dope, oh yeah
I couldn't resist her
Your little sister

How, oh how could I know
How could he know
How could he know
How
I really, really didn't know

I, I promise you
I didn't know, oh no
She was your sister
Sister
What could I do
She is so dope, oh yeah
I couldn't resist her
Your little sister

I, I promise you
I didn't know, oh no
She was your sister
Sister
What could I do
She is so dope, oh yeah
I couldn't resist her
Your little sister

What? How old is she anyway?
Sister...