I have read most all of your posts...and I am sorry that you are going through this...being a woman I can't totally relate to all the emotions you are having...but I do know how the "snooping" can get overwhelming at times...
My H moved out before I found about his A...I did confront OW...H says he convinced her to leave her H (who supposedly was abusive)...She denied the A...H denied the A...I went through the cell phone bill and found two numbers in her state...one was hers the other was a mystery...so I call it...turned out to be her B/F...I talked to her best friends H for quite a while...he was pissed and said he was W would be furious because OW had them pick up my H at the airport for her...she didn't tell them he was married!!!...so she got exposed to her best friend...
Pretty much H told me after I called and talked to OW that things began to change...he couldn't exactly say that I didn't care what he was doing anymore as I shared my deepest emotions with her...before I found out she had slept with him!
IT was a hard time...we were seperated for nearly 2 years...we have now been back together for 2 years...he has been able to profess his love to me again...and we get a long well
Patience is your best ally....Time is your best friend...keep the focus on you and the kids...be there for them...GAL...keep moving forward...it is hard...but it is do-able...