If I were to write a love letter to someone, I may want to take Tarzan's advice. I mean, he does end up with the girl in the end... right?
So it would go something like this:
"I am Melanie of the humans. I want you. I am yours. You are mine."
Pretty simple... we should all take a leaf out of Tarzan's book.
(Although I am still wondering how he can write when he grew up with gorillas. They must have had a great school system)