I would say if you are willing to go through the stress of a divorce. You have no children so thats a plus. And this is a personal opinion, but if your wife does not care if you have an affair, I would say she does not love you, as a partner at least. If love is important to you, then this may be another reason for you to divorce.
I would say stay single for a while after the divorce. Dont move with the other woman at least for some time.
I would say stay single for a while after the divorce. Dont move with the other woman at least for some time.