My roommate and I decided to have some people over and made our contacts to the usual suspects that frequent our house. As the night got going one of our friends Krystal showed up but also walked in with her, a girl we had never seen before and she was very pretty. I approached Krystal and asked “who is that pretty girl that came with you” and she says with a slight chuckle “that’s my younger sister, Kaija” once I took a 2nd look I could see some similarities and she informed us that it was a half sister (different dads). But her sister was 20 with long brown hair and luscious lips, I being 7 years her senior took the opportunity to strike up small talk not expecting Krystal to let anything happen to her sister.

Kaija kept catching my attention, anytime my eyes surveyed the room I was sure to catch her gaze on me and so I figured I’d ask Krystal what the scoop was on her sister. She informed me that her sister was a “man eater” to not let her age fool me into thinking she would be naive to the advances of someone my age and that “if she likes you, she will let you know.” With this info I conceded that maybe her glances were not of attraction but of disdain as I did have a rep in some circles of “getting around” so I left it alone.

The night is winding down and people are leaving the house. I couldn't help but notice Kaija was still here despite her sister being gone, not that it was an issue. I just figured she came with her sister, why not leave with her. I went to my room to put away some nondescript items and when I turned around Kaija was in my doorway. To my surprise, taken a bit back by this I say “hey you know your sister left, is she coming back for you?” the response to this day is one I’ll never forget.

Kaija replies “oh I told Krystal to leave without me because I planned on staying over, fucking you then have you take me home in the morning” I was speechless not knowing if this was serious or not until I recall the comment Krystal made about her sister being a “man eater” so I guess her looks were of attraction. I replied “lock the door before anyone sees you” she turns to close and lock the door then jumps into my arms and we begin intensely making out and removing our clothes.

I get her top off and start feeling on her impressive breasts and before I know it shes got my pants off and is taking every inch of my cock in her mouth unsuccessful in her attempts to deep throat me but the effort was appreciated. After a few minutes she says to me “when are you going to fuck me?” I was in such a daze of horniness I didn’t even think about a condom, I lifted her petite body from her knees, tossed her on the bed and drove my cock into her soaking wet pussy.

Kaija wrapped her legs around me and let out a cry of pleasure as I pushed inside of her and began thrusting vigorously in her very tight and wet pussy. She dug her nails into my bag and was moaning for me not to stop and I gladly obliged and thrusted harder and harder making the bed squeak not caring if the remaining partygoers heard us. Just as I was getting into a rhythm Kaija says very bluntly “fuck me doggy baby” this was a first for me taking orders from a woman and I loved it, I flipped her over and shoved myself inside of her and she let out an audible scream that I know for sure everyone heard.

After about 3 minutes fucking her doggy it was time for me to explode and since I wasn’t wearing a condom I was resigned to pulling out but as I whisper to Kaija that I’m cumming she commands me to “fucking cum in me” and seconds later I exploded inside of her which felt amazing. Once we cleaned up she crawled into my bed and told me I should get some rest because we’re going to fuck again before I take her home in the morning.

We ended up be FWB for about 4 months before she moved on to her next conquest.