Hi Unofficial,
I’m so sorry you’re here and in so much pain. Can you clarify when the relationships with the 23 year old and her friend occurred? Was it after you’d gotten married?
In the meantime, breathe. Take care of yourself physically: stay active, exercise if you can, or just go for a walk. Make sure you eat regularly. You probably have no appetite, but you have to eat. Drink protein shakes if you must. Stay hydrated. If you’re having trouble sleeping, talk to your doctor about getting some sleep aids. Consider asking for anti-anxiety medicine or anti-depressants if you need them.
You should be seeing a therapist to help you work through this, ideally one who specializes in betrayal trauma.
Part of what’s happening here is that for him it was 24 years ago, but for you, with all this new information, it’s like it happened yesterday. He’s had 24 years to process this and come to some understanding. You have only had a few months. He needs to stop calling you a lunatic immediately if not sooner.
On top of that, you’re having trouble believing him, and with reason. People don’t usually have sex with people they aren’t attracted to. Almost no one has sex with someone over 100 times for a year if they aren’t attracted, and it’s equally hard to believe there were no feelings involved.
Regarding the mind movies: here’s an article from the healing library that can help you. There’s loads of other good stuff there too that can help: https://survivinginfidelity.com/documents/library/articles/discovery/how-to-stop-mind-movies/
Finally, you don’t just "move past this". It takes work and time. Keep posting here, this is a great community who can help, and there are many here who have reconciled successfully.