He may be genuinely sorry, or he may be "hedging his bets". Only time and consistency of action will tell. Trying to act like everything is normal though is rugsweeping - there are some serious issues and they need to be dealt with if you are to both reconcile. Things will never be the same as they were... but that doesn't mean they can't be better. There is nothing wrong with you - give yourself the time to understand what it is that you want and what you don't want in your life.
You mentioned previously that the OW dumped him I think. You are not the consolation prize. If he wants to be in your marriage then he must be an equal partner in it.
[This message edited by SerJR at 9:32 AM, October 19th (Saturday)]