Does your friend know her e-mail address?
If yes: Send her an e-mail with Bitcoin

and tell her that you will explain to her how to use it when you will meet :]
Don't be overly nerdy.
If no (perhaps he know where she live): Send her a letter with and explain to her that you want her to be a mother of your babies (+add some selfie

). It should work !!! (not tested yet)
Easily done. Isn't?

Kind regards.
Don't be... well... creepy? This may be worse advice than "The Naked Men" from How I Met Your Mother...
