You are my best friend. In french it is "Tu est mon meilleur ami" Only if it's a girl (or a boy) that say it to another boy.
My in French is 'Ma' if you were a girl.
Girl in french is fille
You simply say "French is the best."
Française
Skinny girl is fille maigre in French.
gross girl
Baby girl in French is: Bébé fille.
"Good girl" in French is "brave fille" or "gentille fille".
For a boy, you would say "allemand" and for a girl, you would say "allemande" in French.
You can say "Es-tu française ?" to ask a girl if she is French in French.
In French, 'the girl' is 'la fille'.