Sex with My Cousin, Welcoming my beautiful cousin into our threesome

Sex with My Cousin, Welcoming my beautiful cousin into our threesome.. Around 3 years after my Husband and I started having sex with my Mother, things were going along very well. Now in our early twenties, my Husband and I didn’t feel like a couple that happened to have sex with my Mother, we were definitely a trio and a trio with plans for the future. Once we were in the position to do it, we were all going to move in together. My Husband, then fiance, had already moved into our own place but it was hardly ever just the two of us. We’d either be over at my Mother’s house or my Mother would be over at our house.

One afternoon, we were at my Mother’s house. My Husband and my Mother were about to go upstairs for a little one on one when my Mother told me that my cousin was going to pop over at some point during the day to collect something, so she was just letting me know in case she turns up while they’re upstairs. My cousin had always been a fantasy of our trio. My cousin was a little younger than my Husband and I at this point, she was 20 to our 22 years and my Mother’s 41 years, 5’3, blonde hair, blue eyes, lovely curves and always sported a slight tan.

My Husband and Mother had been upstairs for a few mintues when the doorbell rang. It was my cousin and I let her in. She seemed a little surprised to see me but pleasantly surprised. My cousin said she was here to collect whatever it was (I’ve forgotten in the decade that has passed since) and I said I’d go and get it from the kitchen for her. As I walked into the kitchen, I heard her voice say,

“I’m just going to the toilet while you get it.” I said,

“Ok”, but after a few seconds I suddenly came to the realisation that she would have to pass my Mother’s bedroom.

I hoped that they’d shut the bedroom door, as we normally don’t close it when we’re having sex in there because there’s nobody else in the house.

I heard something from upstairs and my cousin came back downstairs.

“Your boyfriend is having sex with your Mum up there!”

I didn’t know what to say, as she quickly said that my Husband was on top of my Mother and they were both naked. My mind was racing, “Do I lie and pretend to be shocked or do I tell the truth?” My Mother and Husband came down the stairs, both naked and my Husband’s penis was still fully erect and glistening with my Mother’s vaginal lubrication. There was obviously no point in lying about it now, so we told her the truth.

My cousin’s reaction was surprising, she thought it was a great relationship and she told us how she had often thought about her Mother and Father and having sex with them but never had dared to try anything. My cousin thought that something was wrong with her but she was happy to see that it was not the case, far from it. My Mother said that she was going to back upstairs with my Husband and I was going to join them, but not before asking my cousin if she’d like to come along to. My cousin looked surprised at the offer but said that she would probably just get in the way. All of us told her that she’d be more than welcome and certainly would not be in the way.