Here's a womanxwoman poem but it kinda looks like a contract but you'll understand what I meant.

Mistress, I am ready to enter your world

I will not resist these desires you've given me

I will obey your rules, never hesitate or break your rules

I will be there for you on my hands and knees as you are there for me 

If I disobeyed you or misbehave I will receive the harshest punishment as you see fit

I am your slave, your pet, and your lover

Who will stay by your side forever