Gosh this really struck a thread with me as I am struggling with this at the moment. My husband hasn't actually done anything that I know about, but he keeps acting like he is hiding something. It is driving me completely bonkers - the lying and gaslighting. The gaslighting is the bit that gets to you. The bit where you are told you are paranoid and mental for questioning things that you see with your very own eyes - and that you are a disgrace for breaking up your family over 'nothing'.
I agree that once the trust is gone, there is nothing much left. My problem is, the trust has gone and yet there is no proof anything has happened.
Here is an example, which is why I have found resonance in this thread. I blew my nose in the car and popped the tissue in a takeaway coffee cup on the dash. I spotted a tissue already in there and said innocently, "Oh I see I am not the first to do that". He blew up, saying he hadn't had anyone else in the car(!WTF) and that it must have been me. Err OKAY - it was just a blase, off the cuff comment that didn't mean anything and at most meant - Oh I see you've used the cup to chuck your tissue in too. I asked why he immediately defended himself about having someone else in the car and after a huge argument, it all became clear. It's my fault, I accused someone else of putting the tissue in the bin and why didn't I just admit it was me wot did it.
This incident follows on from a huge list of similar ones over the past year, all of which originated form the fact that he admitted fancyng his new colleague who he kept mentioning for the first few months of the year and I really wasn't very happy about that at all. Because of that, every time I say something totally benign , I am accusing him of something. Either that or he denies the blatantly obvious (yes darling, it is obvious you are going to extreme lengths to make sure I don't catch a glimpse of the computer screen when you check your work emails! - why deny it it - over and over and over again - I saw you).
He gets me tied in so many knots that I can barely get my words out straight sometimes - which does make me look rather crazy. And to be honest, I don't care whether he is hiding something or not - I just want to be at peace. If we weren't married with two children, I literally would have been gone a year ago. Grr.