And the sad thing....i really loved this girl! We had something really special, an energy that i never felt before. But now its gone!!!!
F,
Reread your quote above. Thats how you felt, not how she felt. People who are in love and have something special do not carry on multiple year affairs.
If you are truly only care about her well being and are not considering reconciliation as you stated above, why not just file for divorce? When your in laws ask you why you filed you tell them it is because their daughter is a liar and a cheater.