Girls have very specific tastes. Some like moustaches, beards, or nothing at all.
A way to fit into her mould and let her know you can actually grow facial hair (whether you can or not) is to text her “Should I grow a moustache/beard/goatee?”
She’ll tell you what she likes, what you’d look best in, and she’d be “Wow, he’s a real man because he can grow a moustache just like my first crush Tom Selleck”
Also, never grow a goatee.