You are doing the right things. You need to continue to act as if everything is ok just as it is....no pressure. You can check out my thread and look for postings made by Wiley. Do exactly as he recommends on my thread....it's what you need to do minus the references to actual dating of course (sorry Wiley).
But you must maintain the appearance that your life is great, be busy, be fun, no r talk. It's almost the equivalent of becoming the OW to him though you are his w. That's the mentality you need to adopt...that your life is just great with or without him.
So far so good...work more on your poker face when he makes hurtful remarks such as he's never coming back, not going to sleep with you, etc. And stop thoughts of ow as quickly as you can because even if you did know for sure..what could you do about it? Nothing. So you are better not knowing for right now...he seems to want the m or at least his actions indicate that so go with what you got now...leave thoughts of ow far away (I know easier said than done but it does get easier over time and implementation).
You are on the right track keep going...do not listen or look toward the voices on the track sideline. Your goal is ahead, a better m, let nothing stop you from reaching it...not even your h's hurtful remarks.