Two Can Play That Game.

Eight weeks ago my quiet Sunday afternoon was smashed when my son, his girlfriend and her friend arrived. They were noisey, energetic and from what I could tell, horny.
My son eventually took his girlfriend up to his room, no doubt to get his horny way.

I offered Rebecca, my sons girlfriends friend a drink.
When I walked back into our lounge, she was sat on my sofa, legs spread, skirt hitched up and was rubbing her pussy through her knickers.
Obviously I told her stop. Like fuck I did.
I was across the floor, head between her legs, knickers moved to one side and my face buried in her sweet scented c**t.
She went wild as I tongued her pussy, clit and arsehole making her orgasm. After her having another orgasm I was about to tell her to quieten down, but we both heard my sons girlfriend shouting out "Yes, yes fuck me".
Turning Becky over, I let her suck on my dick for a while, then spinning her around I entered her from behind.
I wasn't wearing a condom and after ten minutes I came up her extremely wet pussy.
That's when Becky said "You'd better get down there and suck it all out".
It was ten minutes later when I rose up from licking out my own cum from her gorgeous c**t.

We were sat talking when my son and his girlfriend came back downstairs. All my son said was "Hey Becky, hope you had fun".
She replied "You know I like em older".
I was left alone for the rest of the afternoon until my wife arrived home from playing golf.

My wife's playing a tournament this afternoon and Becky is calling by on her own, something she's done every chance we get to fuck since our first time together.

You might ask why my son is ok with me cheating on his mum. Well she's not exactly faithful. Playing golf for my wife is just a front so she can have sex with the clubs female vice captain.
It was my son who found out and told me. And it was my son who arranged for Becky to have sex with me.
I'll admit I didn't know until afterwards, but I now know Becky wants my dick as much as I enjoy fucking her gorgeous pussy.
Becky is now on birth control. We were lucky that first time, but we don't take the chance of her getting pregnant anymore.