Engaged Relationship Question-All happily engaged/married couples for 5+years?

I think that if she went out and did this, she doesn't really love you and I believe that you were trying to get revenge, but she can't really blame you. You were honest and loyal to her before this so all of this is really her fault. With this being said, I think you two have crossed a line where you can never go back. Her actions have proved that she does not love you and you should move on and find someone who TRUELY loves you and will be faithful.