All I know for sure is
I know who you really are
I shoulda' known all along
Known it all from the start
All I know for sure is
I know what your problems are
I shoulda' known all along
Known it all from the start
I don't really think that I can face it
I just came to tell you
I think you made the wrong decision
In the heat of the moment
I'm willing to forgive you
And everything you did
I don't want this to be done and over
I'm ready to say sorry and
Bring it back together
Never thought it'd be like this
There's so much I regret that
I'll never get back
And I'll never live sane knowin' I will
Never live the same without
You in my life telling me to
Do things with my time
I want you to regret leaving me that day
I want you to repent, and
Come back here one day but
I have my doubts, who
Knows who you'll be thinkin' 'bout
I shoulda' known
Why'd I have to waste my time?
All I know for sure is
I know who you really are
I shoulda known all along
Known it all from the start
All I know for sure is
You're pretty good at breaking hearts
All I know for sure is
That was your plan from the start
To tear us apart
Cause I will never live sane knowing I will
Never live the same without
You in my life telling me to
Do things with my time
You tried your best, yeah
That's what you told me what you left then
You could've said you were
Gonna leave me all along
All I know for sure is
I know who you really are
I shoulda known all along
Known it all from the start
All I know for sure is
I know what your problems are
I shoulda' known all along
Known it all from the start