A letter to my baby sister's future boyfriend

I loved her before there was even she to love.
I adored the very idea of her and eventually cherished her presence.
I grew up watching her and preparing for your arrival.
You will have to pass my test with flying colors, if you don't want to end up as an unresolved mystery disappearance.
Your name will never be spoken with tears.
Your presence will always have to be a protective one.
Stand tall beside her don't slouch behind her.
I grew up a pianist, I know how to correct a posture, I learn to detect an error in rythm and if I find one between yours I will resolve it, probably with pain.
I will ask you a lot of questions, all of them a trap, an invitation to be cocky.
So be weary in your answers, there will be no second chance.
But above all remember she is your queen and you will have to start mining for diamonds to put in her crown.
She deserves no less...