Best Friends Mum

Growing up I had a best friend, whose mum would always make saucy comments to me. They were mostly about girls, and had I lost my cherry yet.
Seventeenth years old.
My friend invites me round to his place to play on his games console. I get there just after seven and he's not there. When his mum answers the door, she wearing a very see through dress and no underwear beneath it. She tells me her son is at his dad's (They were divorced) and he wanted me to wait for him.
Inside sat on the sofa, she mentions that she's heard I've lost my virginity and apparently heard I have a large cock.
I'm totally embarrassed at this point, but as she's taking to me sat opposite, she opening her legs and showing me her pussy.
My cock becomes erect and its obviously become hard in my loose shorts. I'm literally tenting in front of my friends mother.
She knows its her that's making me erect, and purposely pushes the issue of me having a big cock. I'm about to say something, which I can't remember now, but she puts a finger to her lips and shushes me.
At the same time she opens her legs really wide, making her dress ride up, and inserts a finger inside her pussy. I swear I nearly came right then.
But she stands up, with the dress now around her slim waist and pulls it over her head.
She's naked except for her shoes in front of me, when she says "You're going to fuck me".
I'm a seventeen year old with a hard on. I've got a beautiful thirty eight year old woman naked in front of me, and she wants my dick.
You can bet your fucking life, I fucked my best friends mum.
Once she had me remove my clothes and she saw my cock, I smiled to myself as she said "Wow".
Taking my hand she lead me upstairs, and I watched her tight arse in front of me the whole way to her bedroom.
My dick was raging by the time she began sucking on it, and I was made to tongue her pussy. Which was my first time and I didn't know what the hell I was supposed to do.
Unfortunately I shot my load in her mouth, just moments after she cried out and orgasmed, rubbing her sex into my face.
She must have swallowed my cum, because as she moved around so we were face to face, there was non on the bed, or in her mouth.
Kissing me, she began stroking my cock and had me playing with her pussy and arsehole.
My cock didn't take too long to respond, and before I knew it, she'd put her thighs over mine and guided my dick into her pussy.
She went wild on my cock, almost as if it didn't matter who she was fucking. And each time she ground right down holding her position and moaned loudly, I knew she'd orgasmed.
Switching positions a few times, she began instructing me almost in how she liked being fucked. And before I came for a second time, she had me take my cock out her pussy, as she knelt in front of me, and slowly had me insert my cock up her arse.
To me at that age, it was just everything sexual you ever think of, and wank to.
She made me take my time, but eventually I was fucking her arsehole just as hard as she'd had me fuck her pussy.
It was utterly thrilling for me and I just wanted it to last all night.
When she said "You're making me cum". I felt her whole arse tighten on my dick. It was like a clamp and it pulsed. The only way I can describe it. And I couldn't hold back. My cock erupted up her arse, and I dropped onto her back as my balls emptied up her rear hole.
We lay next to each other after I pulled out of her arse, and she had me put my head onto her breasts.
She spoke to me saying she'd love for me to visit her again. And if I was ok with it, to have sex with her regularly.
Only then did I think of her son, my best friend and mentioned him to her. Thats when she told me "He knows you're here".
She didn't add to her comment, but the way I understood it then, was he knew I was round at his house fucking his mum.
And later on after visiting four more times for sex, he told me "It's you or some fucking loser".
We carried on having sex until I was nearly nineteen. I was also exploring sexually with girls my age too, and they couldn't believe how much I knew about how to pleasure them. Their ex's, or current boyfriend's, either didn't know how to or wouldn't lick their pussy's and arseholes. And how to fuck them to anal orgasms.
Now twenty eight, sadly my best friend passed away from cancer. After his funeral early last year, I spent time with his mother, who still looks amazing. We had an old times sake fuck when I stayed over. It was just as horny as it ever was, and probably even more dirty. I enjoyed the sex immensely and stayed for a couple more days. And each day was just as exciting as the last.
I visit the area I grew up in every once in a while to see my parents, but I no longer visit my old friends mum. She got married after a very brief relationship, and is from what I've heard, in love.
I'm happy for her, and hope she's happy. After all, I owe her so much, in so many ways.