Rayzzz .... I am no vet ... but hope what I have to say helps you
my WAW left in Nov13, was not till in Jan14 (After the holidays of ... wtf is she so distant for) was the OM revealed to me by her by sating .. "We all made mistakes, and I regret sharing things with another man besides you" .... I blew up, and had several blow ups after pushing her further towards him ... a guy she admits "is not you" ... "he doesnt love me the right way" and "its not complete"
My advice .. you are hurt .. I get it ... but you need to work on you, nothing you say about OM is going to help, be the H she would be a fool to leave, GAL, detach and become the better version of you. There is no "good time" for you to bring up OM as she will defend her actions .. and her OM. Dont engage, .... what helped me was my IC ... ask yourself what are the results of my actions if I (Enter item here) ... results of fights push her away, results of you getting angry push her away , results of you pouting/moping/begging push her away. Good luck I look forward to your progress.
