Re: How long were you apart before reconciling?
1) Our separation lasted ten weeks, from October 15 to Christmas Eve of last year. This October we'll be married twenty years (together for over 22). My husband, simply put (but not trying to understate the pain and trauma), had a midlife crisis and took off.
2) I would consider our reconciliation mostly successful. We have a better, stronger, loving marriage with more open communication. We no longer take each other for granted. The only lingering problems are over his PA and EA during the separation, with an ex-girlfriend, but he is completely transparent, cut off contact with her back in January, is truly sorry; and I am finally... I'll never forget, and it'll always cause me pain, but we both recognize that it's something I'll be working through for awhile.
3) What triggered the reconciliation? I was getting ready to move on, getting psychiatric help (I developed severe depression and an anxiety disorder after he left me), start a "new life", and my H's fog finally started lifting, and he saw that he was about to lose me forever, and didn't want that. He decided that he wanted the love of his life back. I was sort of tricked into the reconciliation because I didn't know about the PA/EA until two weeks later, but here's the thing: we both came back knowing that we'd do anything to save our marriage. I'd never wanted the divorce. Despite all the pain he caused me, we were both resolved.
So, another happy story here. I truly do wish it was the same for all of you.