I don't know why

I've been with you ever since
she dropped you, 
But here I am picking up these 
pieces Of your heart. 
Yes, I'm doing this because
I care,
I don't know why
But I just can't love any body else. 
Your smile, your laugh,
Hon you're mine. 
I don't know why, 
But hon
You're  perfect in my eyes
I've cared about you for years
So now's my chance to tell you 
That You're worth it. 
Cause your my everything.