Should I do this for Valentines Day?

There is this girl I like and my school we can send out "grams" like cards with candy. You don't have to put your name, I wonder if i should buy her one and the from saying secret admirer and then put a little hint about who i am. what do you think. what can i add or take out. we talk a little we i have a nickname for her and she and i talk on myspace what should i do? btw we are 13