Let's look at this from the bright side. She can't stop you from dating someone else.
Your marriage is over, the sooner you accept this the better. All that is left to do is divide the money. Get yourself a good lawyer for this and focus on moving on from your feelings about her or the marriage.
Divorce is hell, but you need to move on. Get on with your own life, it isn't her business any more. What she does with her life shouldn't concern you... there isn't anything you can do about it any more.
Lot's of us have gone through this. This is a time to work on your own new life without her. Spend time developing friendships (having a group of buddies is important any many newly divorced guys realize they haven't been spending enough time with friends). Work on getting your single life together.
Believe me. After a year or so, you might just wonder why you didn't get divorced sooner. If you start on your own now (i.e. letting her do her own thing) then you will be through this that much sooner.