A jealous girlfriend, is a faithful girlfriend. If she doesn't get jealous when someone has your attention, then someone else has hers. If a girl is stupid enough to love you after you broke her heart, I guarantee you. She is the one.
50 Questions to Ask Your Spouse on a Date Night (written by a pastor). Answer these every year around your anniversary, so that you can start each year off as a new beginning, then go back and be able to see how your relationship has grown.