Here is a brief intro I am 43 my  wife mistress is 40 we have been married for 15 years . I told my femdom fantasies 3 years back and it has been slow  progress .i am in chastity she does not like to have sex much and I am now more of a domestic servant to her . I almost do all the house chores and her personal work . A few days back while we were sleeping ,in the middle of the night, she was sleeping on her stomach. In my sleep I pulled her pyjamas and slowly started licking her asshole and kept increasing my pace . After a while she too started enjoying it and she started  grinding her ass on my face and I kept probing my tongue in and out of her asshole . My penis was hard inside the cage after a while she asked me to stop pulled her pyjamas back  and told me to go to sleep . It was very painful to sleep with a hardon in the cage