Thanks to all... I get all of the different perspectives. And the more I think about how my girlfriend is, and how much I know that it will be quite significant to her that I did what I did, the more I feel that I should tell her. It's in a strange way, that knowing how much it will hurt her, is making me lean toward telling her. Not AT ALL because I ever want to hurt her in any way, but because I know that this is something that I owe her... telling her, so that we can work this out together... telling her because she deserves honesty, loyalty, and someone who will be "fully" there for her. I am NOW ready to be "fully" there for her... but, obviously I wasn't ready a year ago. Hopefully, she will understand that I have grown in this past year, and have learned from my horrible mistake. Who I am right now, has no intent whatsoever to break her heart, so this is tearing me up inside. But I'm thinking more and more that I owe it to her to be wholly honest with her. Marriage is a HUGE step for us, and I'm hoping that we can only come closer because of this and how I address it... This is hard!