ERDM-181 "Promise me it'll only be once..." I had sex with my wife's mother who is over 50... 4 hours of immoral relationships

My wife had to be hospitalized after a difficult birth, so my mother-in-law came from far away to help with the housework. Honestly, she's got a better figure and sex appeal than my mother or my wife, and I can't help but stare at her. I know it's wrong to get turned on by my mother-in-law, who doesn't look like she's in her fifties, but I take advantage of the fact that my wife isn't home and end up seducing her...