You Be My Princess, I'll Be Your Prince

A character of mine wrote this for his little sister. They were orphaned and he took on the responsibility for raising her.

It's just you and me now sis
I know we can get through this
I can't be a father or a mother
But I can always be you big brother

I won't be perfect, sorry to say
But I'll try harder than ever
You can trust me always, kay?
Our love, ain't no one can sever

We are in this together
A bond we'll share forever
You and me, hand in hand
Royalty in this vast land

I promise to protect you
And guide you as I know how
I'll provide and teach you too
As it is just you and me now