You don't realize
You don't realize you made
The biggest mistake of all
Until you watch them walk away
And you fall
Seeing him move on
Knowing I left myself behind
For I wanted someone else
I didn't know what I'd find
He made me feel special
I knew in my heart you cared
You were with her
All I could do was stare
Now I watch the biggest regret
I ever had
But it was my fault
That I now sit here sad