I was pleased to hear of this new development, and hope it works out well for you guys. You had mentioned previously that you were completely "transparent" with your husband, with e-mail access, etc., so that your OM wouldn't re-enter the picture.
I'm curious as to whether your husband has agreed to do the same? Without a good transparency plan in place, the recidivism rate of infidelity is unfortunately very high, as you probably know.