Actually your situation couldn't have turned out better. His paranoina and guilt from cheating on you is again being reflected onto you by him. He cheats so he automatically assumes that you cheat.
Don't clarify anything for him. You said your peace. He still hasn't taken ANY responsibility for his bad actions and if you notice in your conversation, has repeatedly mentioned about what YOU did as opposed to what HE did.
" He shared that he wanted to come home when he returned to Sacramento, but I didn't need him now."
More "oh woe is me" talk. He "wanted" to come home before while he was with OW? Please.
"H said he wanted to try to work things out."
Really? By having an OW?
"She defended me and said he needs to drop OW first then work on R."
That is great.
"He was broken over the mistakes he made and said that I couldn't possibly take him back."
You should tell her that he needs to get help, drop the OW and then start working on his M with you if he was really serious.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.