Like almost all "Aunty" stories she wasn't my real Aunty, Rose was my mother's best friend, she was 8 years younger than my mother, and 34yo when I turned 18, Rose had lived a few hundred yards down the street, she was about 5'8", slim with short dark hair, about B size tits but with prominent nipples, and had 3 very young kids from her (nasty) cop husband, she was rarely without a cigarette in her hand or mouth.

Fast forward to when I had just turned 18 (and sexually legal in the UK), I was fit, according to girls of my age, well endowed (about 8 inches), and almost 6ft tall, by this time Rose had moved to a police house that was about a 15 minute walk away, I was at home when my mother asked me to jump on my bicycle and take some lunch over to Rose as she wasn't feeling good, it was a crappy wet day but I jumped at the chance and quickly got to Rose's house and rang the doorbell, an upstairs window opened and Rose stuck her head out and told me to let myself in the back door, when I got into the kitchen Rose called down and said "It's raining too hard to go back now, come up for a chat"...I put my wet jacket over a chair and went up the stairs, "In here darling" came from the front bedroom, her bedroom was warm and Rose was sitting on top of the bed wearing a medium length pink nightie that stopped just above her knees, there were no chairs so I stood and tried not to be obviously looking at her tits, she looked at me with her lovely smile and said " You'd better get those wet jeans off and come and sit on the bed"...I was both surprised and suddenly nervous, and blurted out "Where's Don? (her husband}" she told me he was away on a training course and that her Mum had her kids for a couple of days as she'd been ill..."So I'm all alone and need some company"....

I quickly kicked off my boots and jeans and sat on the side of the bed, making sure my shirt was covering my cock. We went through some bland chat about my mother, my father and the neighbourhood, when suddenly Rose asked me if I had a girlfriend, I told her I was "sort of seeing" a couple of local girls of my age, she asked me what we were doing and I told her honestly that most nights met in the local park and "messed about", sometimes we went to one of their houses when there was nobody there... She bluntly asked me if we had full sex or if it was just wanks and fingers, it was awkward but I told her truthfully the latter, and that we had wanked each other off, by this time I had a cock like an iron bar and was feeling out of my depth, Rose patted the pillow and told me to move up and get comfortable, keeping my shirt over my cock I somehow ended up on my side beside her, I remember her nipples were both stiff and I could barely breathe in case I cum in my pants, Rose pulled my shirt from between my legs and said "You don't need to be shy Darling" her hand went on to my cock and balls, I just laid back and gasped, speech was beyond me but I crudely shoved my hand inside her nightie and finally held one of her beautiful tits, she moved in close and I could smell the tobacco on her breath, she kissed me on the lips and while squeezing my balls said " Nobody must ever know about this, you understand?"... I managed to say "Yes" and kissed her back, her lips opened and our tongues touched, I felt my cock and balls being released from my pants and magically Aunty Rose's hand slowly wanking me, in seconds I was gasping as load after load of cum blasted out of my cock, the feeling was the best I'd ever had in my life, we kissed as I played with her tits and pinched her nipples, she milked me until I pulled away, unable to take the sensations anymore, at that moment I was sure I loved her more than anybody ever loved anybody in the history of the world...

Rose pulled back and we both looked at my stomach, there was as much cum as I've ever seen, my flat stomach was covered, Rose must have wisely kept her hand over my cock to stop it shooting everywhere, the palm of her hand was covered in my cum, "Wow, you're a big boy already, do you you feel better now?" she asked with a big smile, I managed an embarrassed " Yes, thanks, fantastic", Rose pulled her nightie over her head and proceeded to wipe up my cum with it, squeezing my balls as she did so, she carefully wiped her hand and then pulled off my briefs while  saying, "We don't want these getting all messy do we"... My hand went from her tit to her hairy pussy, Rose swung over and straddled me, she had a knee either side of my waist, her beautiful tits were just in front of my face and I reached down and felt her pussy, it was definitely unlike the girls of my own age that I had fingered, the lips were big and thick and wide open, they were practically dripping with juice, I found what the girls had told me was their "clittys" to be big and stiff, I knew enough to start rubbing it, Rose sank down and starting kissing me, our mouths opened and we French kissed deeply, I can never forget the intensity of that moment my left hand holding her right tit and my right hand fingering her and rubbing her clit, she moved a hand down between us and rubbed the very tip of my again rock hard cock, she then moved up a bit and my hand was pushed off her pussy, she slowly moved her pussy down on my cock, we kept up with our French kissing and my mind was flicking between our points of contact, mouth and tongue, hand, tit and nipple, wet pussy sliding down my cock.... Rose sat up but had her weight on her arms, she lifted and sank back, as far down as she could, she looked me in the eyes and said "Darling, nobody, and I mean NO body can ever be told about this, do you understand?" I croaked out a feeble " Yes Rose, I do"...

She started to ride me harder, I instinctively pushed up as she came down, the pace increased and Rose started to breathe deeply, she suddenly groaned, shouted "Oh" bit her bottom lip and arched her back, I knew she was cumming and involuntarily I shot my second load at the same moment and pushed up as hard as she pushed down, she flopped forward and we were kissing deeply, my hands were all over her, I couldn't get enough of her...after a a bit she laughed and said "Well, now you're not a virgin anymore" as she flopped down next to me, that thought had already passed through my mind, but now was my first time on a bed with a completely naked woman and I wanted to explore...I moved on top and sucked on both of her big stiff nipples, unlike the others I had managed to suck on they were dark very hard, and had a puckered base, I slid down over Rose as I rubbed her clit, she opened her legs and raised her knees, I had one, then two fingers in her pussy, unlike my other experiences, they fitted easily and I slid them in and out I saw my cum dripping out and on my fingers, I moved further down to look at her cunt, then Rose blew my young mind by reaching down and stretching her pussy wide open for me, I looked up and she smiled, I looked at her clit, labia and vaginal hole, it wasn't a conscious thought, but I moved my face in, kissed, and then licked her clit and cunt hole,  suddenly Rose had a hand on my head and was making sounds, I was wondering WTF I was doing, but it tasted nice, like my fingers after they had been in a pussy, or a girls when they had let me lick them after making themselves cum, so I carried on, "That's it Darling, lick my cunt" Rose said quietly.

I did and in a short time she shuddered and her holes flooded with more wetness, she pulled me up and kissed me again, unfortunately as soon as she touched my cock I cum yet again, not much but, I couldn't stop myself, it was on her thighs and belly, again she used her nighties to clean up...We then cuddled up and kissed, she told me again that it was "our secret", my hands were all over her, and I slowly, almost medically, examined her open and very wet pussy, she kept her legs open and let me, as though she knew I was learning about a woman's body...The moment was shattered when the bedside phone started ringing, I almost shit myself in fear thinking it was her husband and he was going to kill me...But it was my mother asking Rose how she was and where was I...Rose told her I had stayed downstairs as the rain was bad and she'd check if I was still there and call her back...The last thing in world I wanted to do was to leave but Rose told me I'd better go home and that she had a friend coming later...We went down to the kitchen door and kissed, she told me I could come around the next morning, a Saturday, until lunch time, but again told/warned me not to tell anybody, knowing what a cunt her husband was that was the last thing I intended doing.I rode home on cloud 9, smiling like an imbecile, I'd been gone 3 hours and my mother asked me what I'd been doing, I said I fell asleep waiting for the rain to stop, she looked at me like she didn't believe a word....The next morning I was back at Ros'e by 9am...

Part 2 if you want it