Fickle Boy.

You can say I love you to a bunch of different girls
You can smile, you can kiss them
You can buy them lots of pearls
You can hold their hand, as you walk right down the street
You can hold their hand, as you walk right on by me
You can leave cute comments, on their myspace and facebook
You can leave a message, that says only lovely words
You can even think that this will be your destiny
But if you do not know yourself
You don't know anything.