No Brainer

You're a no brainer
You're a heart breaker
the minute you left her
you instantly hooked up with another

She's a no brainer too
'coz she completely trusted you
You said you loved her
and would die for her
but I know you're just a liar
there's no such thing as forever

Now I'm just an outsider
but if you'd ever get close to her
I swear I'm gonna take you down
until you fall onto the ground