SweetCreamPie,
Welcome to SI.
There are a couple of books I recommend for you and your wayward spouse (WS):
1) How to Help Your Spouse Heal From Your Affair by Linda MacDonald
2) Not Just Friends by Shirley Glass
Your WS should start with How to Help Your Spouse Heal from Your Affair. It is a short read. It will take 45 to 60 minutes to complete. It provides a road map out of infidelity. It costs $10. You should read it as well.
The 15 points from Linda MacDonald's book that are a minimum for a wayward spouse to be doing in order to help you heal:
Successful Rebuilders:
• are non defensive
• examine their motives for their affairs, without blaming their spouses
• accept their roles as healers to their wounded partners
• do not resist breaking off all contact with the affair partner
• show genuine contrition and remorse for what they have done
• make amends and apologize to loved ones
• apologize often, especially the first two years
• listen with patience and validate their spouses’ pain
• allow their spouses a lot of room to express their feelings
• respect the betrayed spouse’s timetable for recovering
• seek to assure spouses of their love and commitment to fidelity
• keep no secrets
• do not maintain close ties with those who condoned the affair
• are willing to be extremely accountable for their time and activities
• frequently check in with spouses as to how they are doing
• are aware of and anticipate triggers of the affair
• are willing to get rid of hurtful reminders of the affair
• don’t minimize the damage the affair had on the children
• commit themselves to a long-term plan for recovery, honesty, and spiritual growth
I would suggest you compare your wayward spouse's actions to this list to determine if they can successfully turn their life around and heal the marriage.
I would then discuss the details you need to know after she has read How to Help Your Spouse Heal From Your Affair.
The second book Not Just Friends she can read later.
You should give yourself time to process the trauma before you decide to reconcile or divorce. The paths of reconciliation and divorce may run parallel for sometime. Your situation is yours so I recommend no time table at this point. Some people recommend 6 months to get out of the initial shock. You do as you wish. If this is a deal breaker you can always divorce now, then, or sometime in the future. Infidelity is often fatal to marriages but it does not have to be. Many members here have created great relationships after the original marriage was destroyed.
I know you are hurting and your emotions are raw, do not try to make since of their wayward behavior. It is asinine and illogical. It will make no sense and unless you have that warped perspective there is no way to reconcile the stupidity and risk taking. They get to own it. The consequences are theirs.
Post often and make use of the resources on this site. We are here to support you as you get through this crisis and out of infidelity.