Snakes and Sharks

There's a snake in the water
Curling up against my chest
Trying to poison the blood stream
Attempting to change my loyalty
She sees me as an emotional wreck
Easy to manipulate and sway to her way
My loyalty is deep and set in stone
I don't quite know why this water snake
Thinks it can just curl up against a shark
I see what she is doing, I know her plot
She has baby trapped my friend
My lovingly foolish found family member
I don't know if this baby is his
Don't know how to approach with my suspicions
But I will wait patiently and watch this snake
Let her think I don't understand what she is
For I am shark and this loyalty has teeth