Sex With In-Laws

After my wife and I split and she moved away, I used to have regular sex with her sister and her mother (never a three way!). Surprisingly we remained on good terms. They were both slim and small boobed but surprisingly the sex with mother-in-law was always better than the sister-in-law. Nothing kinky, just average sex stuff. I moved away after a year but I must have had twice as much with mother-in-law compared to sister-in-law.