I'm going to break up with my ex after telling her I love her the day before
Why would you build her up just to tear her down like that?
No, she is really amazing. I love her so much. You see what happened was... well I am not sure.
Sometimes painful truths are the only way to go. I can't make or change this decision for you.
I decided to do it. Thanks.
I think that you should just be honest with her. Tell her how you feel and then go from there.