Reply: Her sister watched us

When I was 17 I was often over the house of my 15 year old girlfriend and her 13 year old sister. When their Mom was working my girlfriend and I would get into some serious kissing, touching and feeling, usually in front if the TV. Ofte her younger sister was right there in the room too. My girlfriend never seemed to mind that her sister was there and she once told me her sister had a crush on me.
One day,my girlfriend went upstairs to take a nap and I told her younger sister that I was going to join my girlfriend and that she could watch us a few feet away in the doorway but she had to be quiet. She just nodded. I went upstairs and got undressed and when I got into bed with my girlfriend I pulled off her shorts and panties and pulled her shirt up to reveal her tits. Obviously she woke up. I spread her legs open and went down on her. Then I turned her over and was fucking her pussy from behind.
She was so into it that she didn't know was that her younger sister was standing just 3 feet away watching us have hard sex. I kept looking back at her sister every time I moaned "I want you so bad" and I motioned with my hand for her to rub herself, which she did through her shorts. The younger sister came quickly as soon as she started rubbing her pussy and seeing that, I came hard, moaning loadly, as I came inside my girlfriend.
As I pulled out of her my girlfriend looked over to see her sister watching from the doorway. She didn't seem to care and asked her if she had enjoyed the show to which the sister said yes it was the best thing ever.
The next time we had sex, she asked her sister if she wanted to watch and without hesitation she said yes so we all went into the bedroom and my girlfriend and I got naked and started to touch each other. Her sister was just standing there so my girlfriend told her to get undressed so she could touch herself while she watched. She was out of her clothes in a heartbeat and was rubbing her pussy and feeling her little titties as she watched us fuck. Then suddenly, my girlfriend asked her if her sister wanted to touch me. She came right over and my girlfriend taught her how to jerk me off. She was really good at it and it only took a couple minutes for me to come. I shot hot sperm all over her little sister who then rubbed it into her budding titties like a pro.
After that she joined us quite a few times. Good memories

My older sister likes to watch me fuck my boyfriend. She's 19 (I'm nearly 18) and she doesn't have a boyfriend right now but whenever me and Kyle are doing it she comes into the bedroom and watches us while she rubs her kitty. My bf really likes to let her watch and it makes him super horny that he gets real wild and pounds me even harder than ever. I don't really care that she watches cuz when we were younger we used to play with each other so I've seen her kitty lots of times. we used to make each other come a lot.
Anyways yesterday we took things a bit further and while I was gettin fucked and she was in the room i cud see she was geting excited so I told Kyle to fuck her while i watched. he was right into it and she had her knickers off already so he shoved his dick into her pussy and got right down to fucking her brains out. she was lovin in and it made me soon fucking wet to see her with him. i had several ogasms as he pulled out of her and sprayed his spunk all over her tits. sure we will do it again soon

My boyfriend and i fuck as often as possible at my house when my parents are out. He is 19 and I am 17. My sister caught us a few months ago and the little bitch said she'd tell our parents if we didn't let her watch. She's been watching us ever since and the last couple of times has joined in. She's 15 and insisted I let her feel my boyfriends dick . I let her and he was a but shocked but she enjoyed it and I taught her how to masterbate him until he cummed all over her hand. The last time when we were fucking she interrupted us so she could jerk him off again and i taught hew how to give him a blow job. She did it till he shot his cum into her mouth.
Now I think she's going to want to fuck him and i don't know how i feel about that. one part of me says no but the other part of me might enjoy seeing my sister get pounded by him because I thin k it'll make me wet. She and i have done things together when we were younger like when she was 11 and we used to enjoy it so maybe it could be fun

When I was 16, my boyfriend used to come over most afternoons so we could fuck. Both my parents were always at work and I was supposed to look after my younger sister who was 11.
We were fucking like mad one day when my little sis walked in and like the other person said here, she just stood there and starred at us. I told her to get out but she said she'd tell our mom. I asked what she wanted from me and she said she wanted to watch us doing it. I knew that she probably would tell so we let her. That was the first of many many times. Whenever she thought we were at it, she'd come in and watch us fuck or when he fingered me or when I jerked him off. After a few months I noticed that she was fingering herself while she was watching us fuck. It was really fucking weird but then one day she said she wanted to feel my bf's cock so he took it out of me and she came over and started to jerk him off. I cold see she was really enjoying it. After a few minutes he shot his cum all over her hand. She didn't know what to do. It was so funny. And after that she never bothered us again.... although I think she would sometimes watch us from the door and rub her pussy because I'd hear here breathing heavy:)

During the summer when I was 16 I often went to my girlfriends house in the daytime when her parents were at work an they left my 14 yr old girlfriend home with her 11 yr old sister.
One day I was on top of my girl fucking her brains out when her sister walked in out of curiosity and caught us fucking and just stood there in awe. My girl initially got upset but I told her that her sister just wanted to learn what was going on.
After that her sister watched us fuck on many occasions.