Answer:
Island hello
They took me from my mother's side where I was bravely bred and when to age I did become they did cut off my head. They gave to me some diet drink that often made me mad but it made peace between two kings and made two lovers glad.
If you have me you want to share me. Once you share me you won’t have me.
I am a king who's good at measuring stuff.
I'm written with two letters, said with one and seen with two. What am I?
No matter how little or how much you use me, you change me every month.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic