I was in the pool alone with my little sister in law and we were playing keep away. She was holding my hand against her chest while trying to pry my fingers off of the ball. I was immediately excited as she put the back of my hand against the top of her breast to get the ball and we were tightly pressed together and her butt was right in my lap (like we were spooning). I was getting aroused and didn't want the situation to get sour so I said, "I am not trying to be all on you but we ended up this way." She said, "I don't see nothing wrong." I know she could feel my man hood poking her in the rear as it was very uncomfortable for me as it was being bent in an uncomfortable way. I ended up moving because I couldn't stand the pain anymore and we continued to play keep away.
We were both sitting on a couch. I had a flash light and was shinning it in her eye. She of course wanted to get me back by getting the flash light. I held the flash light far away with my left hand and she spread across my lap to try to get it from me. I was using my other hand keeping her hands away from the flash light. She then took my right hand and put it between her legs to hold it while she reached for the flash light. I don't know what she was thinking but she had a skirt on. She put my hand right on top of her womanhood. I didn't know if she realilized what she just did. I rotated my hand and my hand now laid on her upper inner thigh with my thumb and pointer finger resting against her panties. She did notice that I had a hard on when her forearm pressed against my lap. I then gave up and let her have the flash light but she didn't move. She left her forearm on my manhood and slowly moved it around to feel it. She rested her head against my chest and continued to not move. I slowly started to rub her inner thigh. I really didn't want to do anything in fear of everything possibly that could go wrong. We ended up stopping after 5 minutes when dinner was ready at my in laws.
Those are the two most sexual moments we have had. She isn't like any 15 year old in high school I ever met. She is very shapely. I really want to keep our relationship as is but I want to have sex with her. Is this at all normal? If so how should I go about it? She is mentally mature so I may just ask her if she would like to. I’m really confused right now because I do love and care for her.
We were both sitting on a couch. I had a flash light and was shinning it in her eye. She of course wanted to get me back by getting the flash light. I held the flash light far away with my left hand and she spread across my lap to try to get it from me. I was using my other hand keeping her hands away from the flash light. She then took my right hand and put it between her legs to hold it while she reached for the flash light. I don't know what she was thinking but she had a skirt on. She put my hand right on top of her womanhood. I didn't know if she realilized what she just did. I rotated my hand and my hand now laid on her upper inner thigh with my thumb and pointer finger resting against her panties. She did notice that I had a hard on when her forearm pressed against my lap. I then gave up and let her have the flash light but she didn't move. She left her forearm on my manhood and slowly moved it around to feel it. She rested her head against my chest and continued to not move. I slowly started to rub her inner thigh. I really didn't want to do anything in fear of everything possibly that could go wrong. We ended up stopping after 5 minutes when dinner was ready at my in laws.
Those are the two most sexual moments we have had. She isn't like any 15 year old in high school I ever met. She is very shapely. I really want to keep our relationship as is but I want to have sex with her. Is this at all normal? If so how should I go about it? She is mentally mature so I may just ask her if she would like to. I’m really confused right now because I do love and care for her.

She's not prepubescent, so it's not pedophilia.
The girl in question isn't necessarily his spouse's sister, it could be his sibling's spouse's sister, so it's not cheating.
You fail three-fold.
also, she's underage. enjoy your time in the slammer if you decide to go through with this.
THIS IS A STORY COPIED FROM ANOTHER WEBSITE, WHICH I REMEMBER READING ABOUT A YEAR AGO.
IF YOU'RE GOING TO POST, MAKE UP YOUR OWN STORY, INSTEAD OF STEALING ONE... DUMBASS!
I love to hunt those.
I was in a similar situation a few years ago. My sis in law is now 17 and we have been happily f-ing behind my wife's back for 2 1/2 years next February. Vasectomy... I love it.
She didn't grab me anywhere inappropriate but from then on any opportunity to make physical contact, she took. When later she lost her virginity, she told me all about it in a long car ride from the airport (my ex and I lived a long way south of the ex's family, and little sis came to visit us for a week.) That week was sheer delightful hell, a young woman who wanted to fuck my brains out and delighted in telling me the details of her limited sexual experiences. She was only just 16. She wore short skirts showing off her long, hot legs (she was 5'10") and low-cut, tight singlets. It was almost unbearable.
Once my ex and I slept over, and the little sis (at 16) had a school friend staying over. The little fiend took a shine to me, and she was cute too. Little sis must have said a few things to the friend, she was overly friendly from the start. I was drinking - they weren't, of course - and after the parents went to bed the girls stayed up in the living room where my ex and I were on a blow-up mattress.
Eventually Little Sis crashed too, leaving delightful young friend with me, showing me a pressure point between the thumb and forefinger and taking altogether too much time doing it.
I pulled an old prank on her, "close your eyes and tell me when you feel the pen move", with a pen on her calf. The joke is you don't stop when they say "now!" and they end up with a big line of pen on their leg. She said nothing but just smiled as the pen went up past her knee to mid-thigh before I stopped. She let me draw all over her. If I had my time again I'd have dropped the pen and reached under her skirt, a short denim number, and finger fucked the hell out of her. I ended up getting quite pissed and falling asleep and woke up in the morning with her beside me, my ex on the other side.
(My ex's mother walked in while we were doing the hand pressure point and we both looked up. The stupid old bitch said later that she'd caught us kissing. It was bullshit, I wanted to do a hell of a lot more than that but there was no "touching" at all.
But anyway, it's a hot situation. Get the fuck away from her before she ruins you, but it will be nice to remember this in years to come!
My BIL got my wife alone once...when she was 16... They had been flirting and it got the better of him.....pulled her down to the floor and raped her...she fought and tried to protest to no avail....
But a funny thing happended during the rape... he popped her cherry after slowly working his huge cock up her tight virgin slit....She tried to push him away...but the more she struggled the deeper he slid into her belly....and the deeper he slid the wetter she got....
After he was balls deep in her belly...he took about 3 long slow strokes and she orgasmed all over him.....repeatedly....before long she was insisting that he dump his load in her belly....He removed the rubber...and granted her request and knocked her up......
When we had sex the first .....she was loose because she had had his baby a year before.....
When she gets super horny today.....she calls me "Bobby" (not my name....my BIL's name)as she orgasms over and over again.....exhorting me to "Knock me up again."
And yes.....they've had sex since we married....and yes...he's knocked her up repeatedly....
I bring all this up just as an example of where this kind of thing can lead....y
I really loved the way you described things in your post! Really hot stuff!
Go to the bathroom and jack off So you can think clearly. been there done that
this website should really change its name
and I've lost interest to this website because of this it took me a good hour or 2 writing a true story and they didn't allow it after all the time i spent writing it.
"HTS" vote for Ron-Paul.