What does it mean when a girl says "she loves you"?

Well Im a girl and to me saying i love you is a really big thing to me. I hate to say this but i dont think she really loves you. Im sorry. i dont know how old you are but if she has only talked to you for about a week then she doesn't love you. You seem like a really nice guy and im sure there will be a ton of girls in the future. Don't stress about it too much