My s****r's friend SeXStoRY

"Steven!" Ellie shouted from the bottom of the stairs. "You've got five seconds to get down these stairs, or I'll have to come and get you." Ellie is my younger s****r's best mate, well I say younger, but with only two years difference—she is 19 and I'm 21—Ellie is like another little s****r to me. If I'm being honest, I wouldn't mind if she was my s****r Ellie has the hottest tight little ass I've ever seen, and perfect 34C boobs that suite her beautiful and curvy body. Everything about her is perfect, her hair, her great smile, and even her dress sense. She likes to wear tight little shorts and revealing tank tops. I reached to open my bedroom door, I had heard her creeping up the stairs. Ellie was obviously trying to make me jump, but I opened my door and jumped out in front of her. I picked her up and threw her onto my double bed, wrestling with her playfully. I think she realized that was staring at her cleavage, because she got up, fixed her bra, and gave me a light slap on the arse. "I suppose I deserve that," I said. She just walked silently out of the room, slowly swaying her hips. A bit later on that evening, I was lying on the sofa, listening to music with my eyes shut. My s****r was upstairs. Suddenly, I felt a hand brush against my leg. I knew who it was, but I laid still and pretended that I didn't feel anything. About a minute later, I felt heavy breathing on my neck, followed by a long moist kiss on my cheek. I slowly opened my eyes to see Ellie moving down my torso, towards my covered semi-hard dick. She slowly unzipped my jeans, slipped a hand inside. I gasped. Her touch was enough for me to cum there and then, but I managed to fight off my orgasm. She slid my erection free of my jeans and leaned her head down toward my groin. Her soft juicy lips wrapped around my now erect dick. She slid more and more of my shaft into her mouth—gagging a little when it touched the back of her throat, but she didn't give up. She moved her head up and down on my shaft. "Oh my god," I moaned as Ellie bobbed on my shaft, it felt so good. We tried to be quiet—not wanting to alarm my s****r. Not wanting her to see Ellie sucking my cock. I heard Ellie moan and noticed that she was fingering herself while she was sucking me off. I got up and put her on her back. I got down on my knees and started to lick her clit while fingering her. It didn't take long for her to orgasm—her back arched and she moaned in ecstasy. "Fuck me!" Ellie begged after her orgasm, "Please fuck me now!" "No, not yet," I said. I heard a frustrated grunt, so I turned her over, started kissing her tight ass and shoved a still wet finger all the way in. "Ouch!"she complained, but that didn't stop me, I kept going, then I suddenly pulled out. Now I will fuck her, I thought. She obviously knew what I was going to do and took charge. She stood up and pushed me roughly back onto the sofa. Crawled up, straddled my groin, and mounted me. Before I knew it she was bouncing up and down on my dick. She looked so hot, her tits bouncing everywhere. She was normally fairly quiet and shy, but not now, she was amazing! "I'm gonna cum!" she screamed. I could feel my body tightening as I too was ready to cum. As soon as she started to cum, I shot stream after stream of my hot cum into her tight pussy. She lay on top of me panting with my dick still inside her. I kissed her passionately on the lips, feeling a little bit light headed from our sex. "Fuck, that was awesome," she whispered in my ear. I was just about to speak when my s****r came bounding down the stairs. "Shit!" I whispered. We quickly sorted ourselves out, just in time to sit down as if nothing happened, before my s****r walked through the door. "Sorry about that, just had to sort something out," my s****r said. She looked at Ellie. "You weren't bored were you?"