Hi Lurch
I agree it's very painful what you are going through.
"Maybe I'm just too old fashioned, but to me marriages and relationships are more than just toys to be played with. "
I agree with this quote as well. Marriages are a little bit harder to deal with than any other relationships, because it is a legal contract between the two. I find it very revolting that cheating these days benefits the guilty party more than the victim of cheating on the recieving end. Maybe a good idea would be to adopt laws against cheating during marriage??? (Regardless of the sex of the offender). In your situation i would completely cut her out of your life and do my best to forget that she ever existed (She chose this herself, so from that moment on she should become a non-existent person). However, i have never been married and so may not completely understand the gravity of your situation. Although, cutting her completely out of your life and any links to her (Such as marriage) will be the most beneficial and healthy for you to be able to move on and find a lady who will not fall out of love with you and accept you for who you are (Trust me there are a lot of them out here).
Hope above helps!!!
Don't cry, don't regret and don't blame
Weak find the whip, willing find freedom
Towards the sun, carry your name
In warm hands you are given
Ask the wind for the way
Uncertainty's gone, your path will unravel
Accept all as it is and do not blame
God or the Devil
~Born to Live - Mavrik~