I didn't wake up one morning
     make a conscious choice
             to be a *****....
First -
I gave my heart
      It was used to clean excrement from your rear....
I ventured so far as to trust
     Your knives are still in my back....
I was kind
     you interpreted weakness....
I cared
      totally unappreciated
I empathized
      your need became insatiable....
After 20 years I finally said
    **** it....
Naturally,
       I'm the *****....
No my dear
        I simply act like you!