Yup, it has been 3 years already for me. First year was hell. Second year was hell-lite and the third was just plain misery. Separation agreement should be finalized any day now, divorced a year from that, stbxww moves to her new house with our kids beginning of December. Twas always a deal breaker for me, tried to stay for the kids sake but I didn't factor in how miserable I would be....hence the separation/divorce.
I don't really feel any better for trying to stay with the WW, but I don't regret the extra time living in the same house with my girls.
So its off to divorce/separation forums and at some point new beginnings....just an update for those at the onset of a infidelity situation similar to mine...as a wise member here often says "affairs kill marriages" which was true in my case, but I wish those of you that are trying to R the best of luck, it takes two very strong people to recover from this crap. (thanks to this site I did survive infidelity, it was just my marriage that didn't)