Happens to men too! How long has that been going on?
The only way to really break through the affair is to let it run its course and for her to see that person in all his flaws. You can't compete right now - not because you aren't better - but becasue you are up against a total fantasy life.
Trust me I tried to compete and lost.
Engaged Aug 2009 Fiancé had doubts Jan 2010 Happily re-engaged July 2012 Discovery of affair July 2014 Separated July 2014 Fiancé is confused about whom to choose Chose the OW Oct 2014