If he is serious about leaving her (and be aware he probably isn't), he will do so, but you should not wait around.
It is up to you to take him back if you want to, but only once the divorce is final. Obviously, it was not a perfect union, but you did invest time and your heart in it, so you need to grieve.
Don't begin dating immediately as you need to work through the emotional upheaval of the affair.
Let yourself get angry and cry over the break-up just as you would had it been a relationship with a single man. Your best friends likely knew of your involvement with the married man, so let theirs be the shoulders you lean on at this time.
Instruct them to help you keep your resolve about not going back to him.
Concentrate on the positives in your life such as your career, friends, hobbies and community activities to help you survive the pain of the affair.
He bought his wife over from another country, then she changed.
Volunteer for causes you care about once you are far enough along in your grieving process to help others.
Join a support group, where you can talk out your feelings about the affair with others who have gone through the same thing.
However, women are notorious for believing lies that married men tell them.
They take every word like it's the gospel of Matthew only to be disappointed in the end. If you've heard these famous lies listed above, you have "taken the bait" hook, line and sinker.