Yeah it doesn't seem fair. The WAW seems to thing she has full access to information of all your activity while at the same time leading a secret life and not letting you see any of her activities. My W won't show me her phone, but feels justified to snoop through all my computer files (looking for reasons to justify her bad behaviour). When I changed my computer password she literally freaked out.
I think it has to do with assuaging their guilty feelings by finding things about the LBS that justify them being driven into another man's arm. As long as they can keep finding reasons to solidify their position they will keep up the rationalization. They'll even make stuff up, and rewrite history when they run out of confirmable evidence.
That's why it's essential to keep as squeaky clean as possible - just so you don't feed into that pattern. Still won't help with the made-up stuff, but at least you won't be contributing to the fuel.
Hence the need to detach, keep a PMA and always treat her with dignity and respect as much as you don't think she deserves it. She's still a person and one that's going through a very emotionally unstable time in her life. Remember you vowed for better or for worse, and this is truly the worse. And since you love her you should have enough compassion to see through her acidic behaviour to the girl you fell in love with (although it must seem at times like that girl has been abducted by aliens).
M: 59 W: 53 M: 9 yrs T: 14 yrs No kids together but D30(hers), S27, S24, D21(all 3 mine) W moved out 11/18/2013 D-Day 12/14/2013 W moved back home 12/1/2014