My dirty cuckold desires

I have watched my lovely wife sucking men's cocks and love kissing her and tasting her naughtiness.  One thing I have dreamed about for a long time is to watch her taking a good deep assfucking.  She loves giving blowjobs and has better orgasms through anal rather than her pussy.  
Anyway, I imagine watching her taking a really deep and hard assfucking and then I'd clean her bull's cock, licking and sucking her nasty assjuice off his big flaccid cock, tasing his cum and her shit.
I know it's sick but I can't stop thinking about it.