I think the song is about letting go, losing some one hurts yes and your alowed to break, but what hurts the most isn't that they are gone but that they never got the chance to say and do what they really wanted to, never having the chance to say I love you or to have a future together hurts more then anything. Loving him was everything and she kept it a secret because she didn't want to hurt herself and him and yet words are normally broken by words left unspoken and she found out the hard way, the meaning is when you feel strongly about some thing then don't keep it in side, if it means some thing to you then its important, don't leave it till its too late, because you don't want to get hurt because it will hurt more haveing to say it to a grave stone.