How can you give a secret valentines card to a boy at school?

write ur note, say love ur secret admirer (or love, anonymous)

then give it to a friend u trust. (make sure its not a close friend b/c then its obvious who wud give them the note.) tell them to give it to the person its for. and if the person who gets it is like, OMG I GOT A VALENTINES DAY CARD!. act like its surprising... and not from u