it all just kinda happened. my wife's 19 year old little sister came to live with us while she goes to college so she can save money instead of a apartment with people she doesn't even know. she is a beautiful girl only like 100 to 110 lbs A cup breasts. i have always loved this girl, i have been in her life since she was 11. she was the little sister that i always wanted cause she liked all the nerdy things that i did and my wife didnt like video games and anime and comics.. stuff like that. sooo needless to say we got along, so i was more than happy to have her in our home while she was in school. any way boring stuff out of the way. one day she got home from school and decided to i guess take a bath, i work from home so i was already in the house. i then started to hear weird noises and got up to investigate and i realized she had left the door slightly open to the bathroom, i guess she forgot i was home because i park in the garage and she goes through the front door so maybe didnt think i was there. i get closer to the bathroom door and i hear her moaning and i can see her with her eyes closed masturbating in the tub. i cant stop staring at her she truly is beautiful and my dick is getting harder and harder, it is getting really uncomfortable in my jeans. she just keeps moaning louder and louder then i hear her scream MY NAME !!!! i then get out of there and go back to my office before i get caught standing there. i am just sitting in my office for about 30 min. when i hear her voice behind me. "hey" she said and i turned my chair around to see her in a sheer bra and panties leaving nothing to the imagination. i asked her "what are you doing? why are you only in your under ware?" she then goes on to tell me she is so grateful for everything i have done for her in the past and that she knew i was home and could hear her a little while ago. she then goes on to tell me she has always had a crush on me and how lucky her sister was to have married me. i tell her thank you but that doesnt explain why she is in bra and panties in my office right now. She said " i have been waiting for a time when we could be alone for a while" why? i ask. she says cause i have been wanting to do this since i was 16 but couldnt but now that we are both adults, i want you to make love to me.

i tell her we cant do this, i am married to your sister. she tells me that she never has to know, and then slowly walks over to me and sits in my lap and kisses me. her now feeling my rock hard erection against her ass she says to me that is looks like you want it too, your dick is poking me in the ass. i said i couldnt help it with how beautiful and sexy she is. she kisses me again and this time i probe my tongue in to her mouth kissing back passionately and fondle her breasts through her bra. i then pick her up and carry her into her room because if im gonna do this it will not be in the bed that i sleep with my wife.

I lay her down gently on the bed looking down at her amazing body, she then sits up and starts unbuttoning my jeans and pulling them off instantly feeling a relief of pressure because my erection was pressed hard against them. her now rubbing my dick through my underware she says to me that it is bigger than she thought. she said she had caught glimpses of it when i was showering and would spy on me but i was never hard then. she then pulled my boxer briefs down and my dick sprung out and bounced in front of her face. she reached out and softly ran her hand down the length of the shaft and her then seeing precum starting to drip from the end she grabbed the shaft and then licked the tip of my dick getting all of the precum in her mouth. she said it tasted good and then eased my dick into her mouth and began giving me the most amazing blowjob i have ever had, she then asked if it was better than her sister, i told her that her sister doesnt even do that for me. she said that she would do it for me any time i want. i lifted her head up from my dick bent down to give her a kiss and said it was her turn and i laid her down on her back and got between her legs. i slid her pantied down and off her and threw them on the floor. she was quivering from the very first lick i did on her perfectly bald little mound of heaven. in no time i had her shaking with orgasm, and then she told me she needed to return the favor and she rolled me over on my back and straddled me. she was about to position my dick at then entrance to her pussy when i said wait, dont we need a condom? she told me she was on the pill and wanted to feel me inside of her. and with that she slide down all 9 inches of my cock and she was so tight and amazing. she started slow to get used to it but after a couple minutes she started going faster and faster and harder. i was getting close and i told her and she screamed "cum in me!!! i want you to fucking cum in your sister in law's pussy, i want it all" i had never heard her talk like that but it was such a turn on it pushed me over the edge and i came harder than i ever had inside her sweet teen pussy. she leans down kisses me passionately shoving her tongue down my throat and say thank you for making my fantasies come true. she had masturbated many times thinking about it, but she said it was better than she could have ever imagined. she asked me if we could continue doing this when my wife is out of the house, i kissed her on the forehead and said of course we just need to be careful.

we have been fucking since that day and my wife still knows nothing. i have even gotten blowjobs from her with my wife in the house. she even gave me and hand job under the blanket with my wife in the same room while watching a movie in the dark. she is a little sex freak but she is my sex freak.