I went back and read your previous posts.... and if you want me to be the one to say it, I'll do it.
Divorce is the right thing.
You would NOT be making a mistake, you would NOT be overracting, you would NOT be missing out on your one true love. She has NO intention of changing her behavior, in fact, she's taking her infidelity underground.
If you need more evidence to really see the light, then do it. Put a GPS tracker in her car, install a keylogger, put a VAR in her car, whatever.
I'm telling you, run from this broken, disordered mess.D-day OW#1 2/2004; R for 6 years; D-day OW#2 5/2010
Marriages that start this way, stepping over the bodies of loved ones as the giddy couple walks down the aisle, are not likely to last.