The redhead seems like a sexfriend only, not sure how to understand their relationship when he was almost like her slave back in the school days while she had fun with her boyfriend. I don't think she deserves anything at this point. The nurse seems like a good woman without any uterior motives. About the wife, they had communication issues, seemed like she was living with her work and maybe gave not enough attention to her husband that had pretty strong sex drive. After the "break up" sex she seemed not that convinced about the divorce, maybe she would even stop it but MC kinda didn't read the mood.