Jej188,
I am sorry that you find yourself in this position. You have started already to get good advice from SI posters. You will get a lot more as your situation develops. The week-end may be slow, but soon you will be flooded with posts from people have walked the walk and who can help you.
First, however, you must implement the 180 process. Please read about it on this site. http://www.survivinginfidelity.com/faq_bs.asp#FAQ11
The 180 is counter-intuitive, but it is the best way to get to either reconciliation (R) or divorce (D), with your best interests in mind. Do not do the "Pick Me Dance." A husband, associated with the wandering wife (WW) for years and the day-to-day vicissitudes of everyday life, can not compete with the new relationship excitement, the thrill of the chase, the high from being naughty, and the state of being purely selfish with an other man (OM) in a fantasy world. If you tried, you would make yourself look weak and pathetic. Instead, show strength of character and demand that she respect you. Do not lose your cool. If you do, you will only give her more justification that she is entitled to an affair, where she is the prize; that are are the asshole. She is not the prize. YOU are the prize. YOU are the loving husband that she is cheating on, and is about to lose. SHE is in deep sh*t, and she willingly put herself there.
Second, demand NO CONTACT (NC) with the OM. She must write a no-nonsense email, that you read and approve before it is sent (or make a phone call in your presence on speaker).The OM must be blocked on all channels of communication (email, text, Facebook, Instagram, any other messaging apps). If there is any future contact, she must inform you immediately. She must give up her OM, immediately and FOREVER. A marriage is between two people, not a husband, a wife and her boyfriend.
Third, you must demand full disclosure (timeline, all other details) about the nature and extent of the cheating. You can not reconcile, accept and forgive anything if you do not know what it is that you are dealing with. Often, cheaters will only disclose only that which you already know. They will deny, deny, and deny again. They will minimize. They will lie. They are in self-protection mode. You must be clear from the start that lying, by commission or omission, is not tolerable and will lead to separation and divorce. The lying is typically the biggest risk to the marriage than the underlying betrayal because it amplifies the betrayal and disrespect.
She must eliminate all people in her life that are "enemies of the marriage". That is, people who knew about the affair, encouraged it, facilitated it. Those people are toxic to the marriage, and must go.
Have her turn over to you ALL of her electronic device and passwords. She has lost the privilege of privacy. You must be able to review the communication between the darling couple so that you fully know/understand the extent of the affair. Do NOT allow her to erase/delete her communications. There is software that can be used to recover deleted content. Posters will explain your options. Throughout the process you should be able to check her communications so that you can monitor compliance with NC.
Consider using voice activated recorders (VAR) placed in her car or other areas where she might talk to her OM, family or friends. This information is not for legal proceedings, but just for your information. Cheaters lie and betray. You are entitled to protect yourself and use countermeasures to fight against this betrayal. There will be other suggestions by posters as to methods/procedures for these purposes.
Disclosure of the affair to her and your family, ministers/pastors/priests, etc. should be considered. Her actions have consequences. She should be held accountable. Many posters will have suggestions as to how/when those disclosures should be made.
If the guy is a coworker, one of them must leave. You can't assure NC if they see each other at work. As long as there is contact, the affair is ongoing.
As part of the 180, stop all emotional and financial support for her. She has a boyfriend for her emotional needs. She "fired" you from that role. The consequences for that is that you no longer need to be stuck with only the "provider" role. She has to earn your support. She has to fix herself before you start to work together to fix the marriage. She should go to individual counseling (IC) to figure out the whys for her affair. DO NOT go to marriage counseling (MC). MC is to fix the marriage, at all costs, usually at the expense of the betrayed. MC encourages the betrayed spouse (BS) to accept what is done is done and to move on (rug sweeping). The wayward spouse (WS) is allowed to blame-shift so that the issues with the BS prior to the affair are to blame and the affair is just a symptom. That is bullshit. You were both in the same marriage, you did not cheat. Marital issues may be a 50/50 responsibility, but the affair is 100% her responsibility. It has nothing to do with you. She has a major character flaw. You may also need to seek IC to help you through this shit-storm, which is not of your making.
You should go interview several (at least three) lawyers. You must know what are the legal processes and consequences, including financial, for separation, divorce, child custody, etc.
Consider separating your assets and finances. Set up your own bank accounts and put 50% of your cash in your accounts. Have your paycheck sent to your account. Do not let her use your assets to finance her affair.
Posters, like Thumos, will provide you with excellent detail about a "non-negotiable package" that you must demand for you to start the long, arduous task of rebuilding your marriage.
Do not just stay for the kids. They can feel that something is wrong. They should have two happy parents who love them dearly, even if those parents do not remain married to each other. Unhappy parents, who co-habitate for the kids, is not a good environment.
Please post as much detail of the nature and extent of the affair, actions/feeling/etc by you and your WW, and related developments. SI posters are most effective when they have those details and can tailor their comments/advice to your situation. Remember, all of this is anonymous. However, NEVER let your WW find out about this site. This is your safe place. If she reads your posts and the advice that you are given, she gets the tremendous benefit of the counterintelligence information.
Your goal is to get out of infidelity asap. SI posters will, without doubt, be a valuable resource and source of support while you are going through this.
Sending strength and support.
[This message edited by PassThis at 1:49 PM, January 17th (Friday)]