She was fine with it. She said the same thing that my parents said - that she had wondered if me (or my wife) were gay, as that was the only scenario that made sense. We had split, but we were now getting along so well she couldn't understand why we hadn't reconciled... So I think I'm done - for now. Nobody else on my list of people that really need to know. Yay for me!
One of my New Year's resolutions is to come out to my sister. Im nervous but I have a gut feeling she will be accepting
Thanks everyone. I do feel better for having told her - as much for myself as for my ex wife. Now my sister knows that it wasn't my wife's 'fault' that we separated, and she doesn't have to let her loyalty to me conflict with her friendship with my wife. The next step is to let the family know that I'm seeing someone (which is an understatement - I'm madly and totally IN LOVE with someone!). Another 'secret' that I'd just as soon have in the open.