BI, sorry about he trouble with the OW, I read about what you are dealing with, keep away from her!
MN, it is funny, my H has said repeatedly to me "you are perfect, you are innocent," this whole thing has shaken me to the core. I do not know where my innocence lies, in many ways I never felt innocent, as it seemed to be stripped from me at an early age. So, no in that way I do not feel that I am innocent, nor have I been since I was very wee. What H offered me in the 12 years together was a rebirth of trust in men, I trusted him almost completely.
I do hope that my H is having a really rocky mid-life transition. It is possible this is the case, he is still here, has cut off relationship with OG/W, and it feels like he is showing more empathy and self reflection. I don't feel like I can speak to innocence because I don't remember the time where I truely had this quality, but I can say that trust and faith in another, in a partner can be re-built, it may look different, there may be a few more fortifications, but I think it can be restored mostly.