My Stalker Lovely

You violently twist and turn,
Like a knife in my heart,
Digging deeper and deeper,
In such a vulnerable part.

I can't keep you out,
I moan and prostrate,
You're like a bad disease,
Or something sour I ate.

You course through my body,
A cancer that kills,
You wait at my doorstep,
Like overdue bills.

I pay you your dues,
But your unsatisfied,
Maybe you're a witch,
And I must give you my eyes.