Oh OP, I'm sorry! When I posted yesterday I had hoped it would just turn out to be completely nothing.
He really doesn't "get" what he's done does he? Whether he's had sex with either of these women isn't the only relevance is it? He's cheated on you whether he sees it that way or not.
Having been through this (an emotional affair/sexting), I would recommend that you tell him to leave - at least for a while. You need space to think things through & you can't do that with him there making pathetic excuses and trying to minimise his behaviour.
The stages H went through after being "discovered" were;
Saying sorry, promising never to do anything like this again. But without any actual appreciation of what he'd actually done. Just hoping to smooth things over
.
Blame. Blaming me, my illness, his upbringing (very spoilt child), my upbringing (emotionally cold), our DCs (stressful), OW (needy), OW's DH (serious health issues). Basically blaming anyone or anything but his own actions.
Sadness. "I can't live without you." "I've fucked my life up." "Please forgive me."
Genuine remorse (although this doesn't always happen). He can't have genuine remorse until he fully appreciates and understands how wrong what he did was. We only got to this stage with counselling through Relate. Having that third party helping to talk the situation through brought the actual reality home somehow.
There are a few things to remember though - even if H does show genuine remorse and changes his behaviour (permanently) you don't have to stay with him if you feel you don't want to. We have been together for 21 years, married 18. I discovered H's affair 12 months ago now, he moved out at my insistence and we have been working on things ever since. Even with 21 years under our belts and H having changed his behaviour & attitude to lots of things quite dramatically, it is still not certain whether our marriage will survive. I still love him but TBH, the damage he has done to my trust of and respect for him may be irreparable.
Best of luck OP. Start with one thing at a time, for me, that one thing needs to be space.