I just found out that the very first girl I had a crush on got married?

The first girl that I ever had a crush on got married yesterday. I was not invited as I did not know her very well. I kept my feelings for her a secret. I am saddened now because the chances of us getting together are slim to none. How do I let her go in my heart and in my mind? I still think about her everyday. The husband is a lucky man, a very lucky man.........