My favourite four moments...
Listening to her with her first other man after 19 years of loyal marriage.
Listening to him fucking her in our bed, hearing every thrust of his cock taking her cunt balls deep, and hearing his moans of pleasure as he was pumping his seed deep inside her.
Standing in another man's living room, looking up at his ceiling, directly under where he was fucking my wife hard in his bed.
Hearing him thrusting his cock in and out of my wife's cunt, made oh so clear by the sounds of his bedsprings working overtime, and his headboard hitting the bedroom wall in tune with every deep thrust.
Being in our bedroom, laying on the floor with my ear pressed into the carpet , listening to a male friend of hers fucking her downstairs on our sofa.
Being downstairs as she was getting fucked by a well hung guy in our marital bed.
Having to answer the door to our postman , signing for a parcel with clear sound coming from upstairs of someone else fucking my wife .
Rather than being embarrassed, it was even more of a turn on knowing he obviously knew he was hearing my wife getting fucked by another man.