Sounds like this old girlfriend was your first real love in life. You will always remember her!All through your life you will remember her, that's normal. I still think of my first love, and think what it would be like if I was still with her. Just keep her in you thoughts, but don't mess up what you have now. One day once you have been married awhile, you could talk about both your old relationships, but you won't have to worry about it because you love each other. You could be having cold feet about getting married, and thinking about other options. This is normal too. Just stick with you new girl, and don't look back. Good luck!