hey side, sorry about your weekend being an eye opener. Sometimes those are good things though. When I accidentally found out H was 'seeing' someone else (after the original OW), I literally shut down, but not in a bad way. It hurt, yes, but it helped me. I actually thanked H for sending me a text that was supposed to go to her (innocent enough, but still), because it helped me move on. I am not ready for divorce, but I am ready to leave the confusion and craziness to H.
No more dates!!! You aren't ready. Flirting? Yes. Dates? No.
I think you need to stop talking to H altogether for a bit. Go dark, don't answer calls when you know he is with OW. No way would I even call H if I thought he was somewhere other than work. No way! And definately no more R talk!! Yes, he states its over. But that's today. Keep yourself afloat and happy and see what tomorrow brings.