At first (say, kindergarten to Grade 3) you were supposed to give a Valentine to each person in your class. Once unconscious homophobia set in (around Grade 4) you were supposed to limit your Valentines to opposite-sex members of your class. After that, if you were smart, you'd limit yourself further still, targetting only "cute" or "cool" boys as your recipients. In highschool, you'd just wait. You'd wait for some brave boy to send a Valentine to you. And you'd worry about getting none at all.
Sigh. Valentine's Day was hard. To do it right, you had to understand the vagaries of self-conscious love and social politics. Few did.
Like most people I know, I think Valentine's Day is pretty stupid, but I remember when it meant something to me. Kids think all "holidays" are the same. They don't distinguish. Halloween, Christmas, Victoria Day. It doesn't matter. Holidays are about celebrating in whatever way is "traditional." There's not a lot of critical thought involved.
Nonetheless. I have some fond Valentine's Day memories and with those memories in mind, I bring you this cute video. It's not new and you may have seen it before.