I was 15 at the time and i lived with my mum who was 40. And two sisters who were 16 and 19. Both of my sisters were similar looking and very sexy. I had often wanked over them sunbathing in the garden. My mum worked late nights and was almost never on before midnight.

One night my 19 year old sister was out with her friends and my mum was at work so it was just me and my sister in the house. I was watching Tv and she was meant to be studying but i knew she wasnt. At around 8 pm she came into my room and asked to talk. She told me that she wasnt feeling confident about herself since her boyfriend had broken up with her which i was astonished by as she had a very pretty face, a gorgeous body with nice big breasts and an amazing ass. She asked if i had ever masturbated over her and i blushed and said yes. She smiled and asked if she could sit on my lap and i said yes.she kissed me on the forehead and sat on my lap giving me a quick view of her ass crack.

I was tall enough to look over her head to see the tv but i was too distracted by her breasts. My arms were around her and my hands were touching the bottom of her tits. She picked up the tv remote and turned off the tv. She asked if she could move my hands and i said yes expecting me to move them away from her. To my surprise she cupped her own breasts with my hands and instinctively i started to squeeze. This got me hard and with my erection being about 6 inches i knew she could feel it on her ass. She let go of my hands so i squeezed a few times then slid them down to her legs and up her skirt to her panties.

I started to rub her pussy through her underwear and she started to moan. I could feel her getting wet and this got me very horny. She got off me and sat next to me . I carried on touching her pussy and eventually took of her panties to touch her bare pussy. I could feel her pubic hair and this didnt effect me at all. I pushed my fingers in between her vagina lips and started to finger her. She was moaning loud and i asked her to return the favour. She pulled down my pants and started to stroke my cock which was already hard.

I carried on fingering her as he moved me off the couch and on to my bed. she started jacking me off properly and precum oozed from the head of my penis. She then licked it off my cock and began sucking it. It was amazing. She licked and sucked all the way from my balls to the end
And i came in her mouth which when quickly swallowed. We got into a 69 position with her sucking my dick and me eating her out which was amazing and i made her squirt. After about 20 minutes she got up and took out a condom.

She opened it and used her mouth to put it on my cock . She then took off all her clothes and i did the same. She spread her legs on the bed and i placed my cock on her vagina and rubbed it up and down her vagina as she put her breasts into my face. When i started to put my dick in she laid back and just took it as i slowly pushed my cock in and out of her pussy and i eventually started to get quicker and made a rhythem of it. In. Out. In. Out. We were both moaning and panting and eventually i jizzed in her and filled her with my cum. I pulled out and i was catching my breath when my sister turned over and got into doggy style position.

Instead of going into her vagina i slowly placed my cock into her anus and pushed it in. She said it hurt and asked me to pull it out. Instead with all my strength i rammed my cock right into her ass and got balls deep and she moaned louder then ever before. I carried on thrusting my cock into her and just as i was about to cum i pulled her air and with a yelp she clenched her ass and it felt amazing as i came in her . She was moaning and panting when i took it out and just lied down next to her with brown stuff which was of my cum and the stuff in her ass and then she started to lick it off and she gave me one final blowjob and i came one last time and then she kissed be on the lips and left to go and shower.

For the next two years we have sex at least once a month but we stopped when our older sister who was 21 at the time caught us.