Even when I was at Hogwarts and really never had any dates or anything like that, it was the day when you could dream that there was someone you hadn't noticed who would end up being madly in love with you.
Of course, nobody ended up thinking that of me, but it was a nice thing to think about. All the hope and dreams that you could have, and it almost didn't matter if they came true or not. Or if you were left standing in the corner all alone.