I think YOU'RE being short sighted.
You shit on your own doorstep. How lovely horrible that your husband will now be unable to take a step into that school playground for drop offs, pick ups, sports days, shows and parents nights without being triggered.
He wants to go over the same details over and over again because he is in the processing stage. Don't you dare ever say you've "gone over this already". If you're so bothered about saving the marriage, you will answer, and you won't hold back the details.
He was also friends with my husband and had witnessed what he believed to be unacceptable behaviour from my husband, he thought he didn't treat me properly and we began to confide in each other as he was also unhappy in his relationship
Ah wonderful, the other guy has a family too, and was well aware you had a family. Disgusting from the both of you, not considering how this would affect your children.
Life will never be the same again. An affair is abuse on the purity of you marriage. Your husband didnt sign up to share you with another man. You say he was controlling and poor you, you were a SAHM mum. Why didnt you address these issues instead of throwing a selfish bomb into it?
Trust me, your story, albeit having to choose between who you loved, is exactly what my husband did to me. He will utterly hate you. And its taken me a year to calm down and get more good days than bad but a month out I probably would have done time and taken the affair partner out if I had the chance, I pinned the woman and verbally ripped her a new one but god knows what I would have done if I had her alone. I was irrational. Don't underestimate your husbands next moves because even he probably doesn't know what hes doing day to day.
He believes he will never be able to move on from this and will never be able to trust me again and our marriage will never be the same
Because he's right. He will never trust you again. Your marriage will never be the same again.
He's pissed off at your friend - err, yes, she knew and she basically support the affair. She played a part I'm afraid.
So what do you do from here?
*Marriage counselling is an option, but it shouldn't ever be on its own terms, you will both need individual counselling. I'm a year our and individual counselling is very beneficial for me.
*Your husband is asking to move schools. Not a bad idea to be honest. If there's no reason like SEN, you should consider it. That school will be an absolute torture for him now. Not his fault - so fix it.
*Passwords, phones, full disclosure. Suck it up. you're married right, so you shouldn't have anything to hide.
*You need to have a word with yourself , saying things like "he's not blameless". There is NEVER enough reason to do what you did. You could have taken steps to save your marriage THEN , not destroy it.
Your post strikes me as "poor me what do i do". Own it. Put the hard work in or leave this man now, let him find a better life partner.