I just went through this exact situation. There was no love between my ex and I. We got pregnant and married young. Eventually our jobs and no money tore us apart. I found someone who is my soulmate and gives me everything that my ex couldnt. The point is the day HE left ME, I found out that he indeed was ALSO cheating and felt the exact same way as I did. So maybe you need to do a little detective work, maybe your case is not the same as mine but it sounds to me to be very close. Also, dont drag your wife around like this, if shes the way i was she'd probably rather know than not. Besides if the tables were turned what would you want her to do? Be miserable like you and cheating behind your back or just tell you that its over? Really think about that. good luck! Remember, if its meant to be it will work itself out in the dend