diffeentguy,
I know this is tough, and although each story varies, their are constants in each one that will help to set the groundwork for healing.
First, All infidelity involves lies, period. Its required for the deception to continue.
In my case, and it sounds like your too, it could be pathological. Liers lie, and the extremes vary.
Knowing that, only believe the facts that you can verify. Try and pass of the lies that you cant confirm.
Second, realize that an adulteress is made by one affair. Multiples are bad, but the facts are, once is enough and tells you what she is capable of.
Thirdly, you have the addiction. That's a compounding issue, because addicts will do whatever is necessary to get high.
I would ask that you don't over-think this by trying to add up the affairs or wrongs in each case, just recognize that there are three issues to deal with; Lies, Infidelity and addiction.
In my opinion, reconciling with one issue is hard, dealing with three is impossible by yourself.
Get professional help for the both of you, and start setting up a support structure of friends and family for yourself and kids.
Recognize that you cant fix this, period. SHE has to want to do it, and SHE has to do the work.
Also realize that you need to make alternate plans for your own healing and future, not based on her. Seek counseling, protect your kids, and separate your finances.
Take care of your mental, physical and emotional health, for your children's sake. Realize that you are a single parent now, at least until she gets her stuff together.
And, just in my opinion, set a timeline of required behaviors you consider deal-breakers.
Stick to your guns, and don't bend any lines.
And remember, everyone here is here for you if you need advice, or just need to vent.
Fire