So the wife and I separated, but not totally, because we decided to continue living together and raising our son. But, romantically, we're done. And it was actually at her suggestion. She said, "I don't think you're bi; I think you're gay." And that was that. I cried a bit, she cried a bit, then we all went to the county fair the next day and had a WONDERFUL time together. Go figure!
I am glad this has worked out so amicably for your family. As the child of two parents who have had some pretty serious trouble in their relationship, I am incredibly happy that they have worked out their differences, as I am sure your own children will be. A similar problem tore my cousin's family apart. He wound up leaving home before he completed high school, and got into a drugs for a few years (though things have worked out for him). That this worked is really a testament to the strength of your marriage and to the feelings (if only platonic) that you share for one another. I hope that your new path in life continues along this auspicious beginning.
I am so glad you could stay living together; my parents separated 3 years ago, and it is hard with them living in two houses, though Dad is still in the same town.