I agree with dem. You should be true to who you are. If you did sleep with her or hire a hooker etc it would only be because you are hurt and angry and want revenge. I am sorry to say that this is partly your fault. You wasted 14 years on this girl and for what? She made a fool of you but you let her. Most men would have walked away a long time ago and found a different girl to marry. Whats done is done though-you cant change the past so i think you should cut all contact with her, take your time to grieve and then get back out there and meet someone great and marry her
good luck
"Don't ask a question if you can't handle the answer".