Lost Causes

I am mad about this
How my feelings feel dissed
Knowing this is wrong
But yet it's what my heart longs
Yeah I feel bad
And I know you do too
But then after we were so glad
that we couldn't be mad
we are both taken
And I wouldn't want to do anything to have your relationship shaken 
My feelings run deep
So much that my heart can't speak
I'm quiet because the one who I connected with from the start
Is now at the top of my chart
I love you and I mean it
And I'll keep telling you so you don't forget it
It's hard though
Knowing how I feel
But knowing it's going to kill
This will never be
As if I was a lock and you a random key.