This story is true, I am not a skilled writer, but I will try to faithfully convey all the events in our 40-year-long marriage..
(MFM) or (MFMMMMMM...) My young wife (19F) and I (21M) just got married. The wedding was attended by a small circle of family and friends, the best man at the wedding was my brother-in-law (husband of my older sister) and an experienced and well-known seducer and fucker. At that time I was unemployed, so I started working with the help of my sister. My sister was a woman with a strong libido, she loved sex and changed partners, she didn't stay long with anyone except husband, my brother-in-law..
One day my wife called me on the phone and said that she was going with her sister to a nearby mountain to hide her cheating from her husband, it was an alibi, but it wasn't like that, she was lying.. I will find out later when we ended up in my sister's apartment, we were celebrating my wife's birthday, she turned 20 at the time. We had fun, drank, danced and went to the rooms around midnight, I fucked my wife like crazy. She too had a powerful orgasm, moaning as if everyone could hear her. I soon fell asleep and woke up because I had to pee, my wife wasn't in bed so I thought she was in the toilet but she wasn't there.
I went upstairs and through the half open door I saw my wife sucking my sister's husband's dick, the sister was sleeping, his cock was completely wet from her saliva from her mouth, then he stuck his huge cock in her wet pussy and started to fuck her. She let out a deep sigh, as if the size of his cock squeezed all the air out of her, it was mesmerizing to watch, my cock rose like never before... After twenty minutes of fucking on the floor next to the bed where my sister was sleeping, he cum deep into her and they kissed like the most in love couple on the planet...