It sounds as though your wife has never been physically attracted to you and used the attack as an excuse to explain it. She has sex drive and imagination -- this is no cold fish!
So... what do you want?
You have been deceived, there is no doubt. Is this a dealbreaker? If so, deal with it.
... or ...
You can figure out why you are not attractive to her and change it. The way you act, dress, interact - shake it up and catch her attention. She certainly talks to you about all her 'bad girl' thoughts... maybe she wants you to treat her like a 'bad girl' -- could be fun. Use your imagination