In your first post, you asked for advice. Here is my advice. If you are honest and serious about busting your divorce,
a) call your primary care doctor today, and ask to have your physical sexual health evaluated.
b) find yourself a good therapist/counselor. Discuss your sexual attraction to your STBXW. Develop some understanding about why you didn't find her sexually attractive.
There are a lot of other things you can do to DB, but I'd probably start with the above, since they sex was the core issue to your marriage breaking down.
Not only that, if you want to be with any woman ... you'll likely need to be in good sexual health -- physically and psychologically.
What do you think?
Good luck....
Me: 50, MLC/WW 45 Young kids Nov 2015: BD1 Apr 2016: BD2 Jan 2017: W filed Feb 2017: D final