The feeling you felt, of acceptance for your wife's nature, was real. That peace was real. You probably got a similar feeling a while ago when (if) you were able to accept your own true nature as a sexual person. Your wife can't take that away, and you know it. That should give you some confidence and strength to do whatever it is you decide you should do.
Whatever your decision, speak to the best part of your wife. You know what it is and where to find it. Speak with compassion. And speak from the best part of yourself.
Good luck
SM
"If we will be quiet and ready enough, we shall find compensation in every disappointment." Henry David Thoreau
