I am an 18 year old girl, average brown hair, average build, decent sized breats and a nice pair of legs. I've done a lot of things with a lot of guys, but this story happened with my boyfriend Danny, who is also 18.
It was a hot summers day, and me and Danny were at his house, I was wearing a short black dress, (it was a bit tight too) and a pair of black high heels. We were both sat on his sofa watching a film, and I was constantly teasing him with my legs. Danny loved my legs, as he kept reminding me, so when I was sitting next to him, I would place my nearest leg inbetween his and rub my foot up the inside of his legs. After a few minutes of kissing we were fairly distracted from the film, so put my arm round him and whispered in his ear. "Lets have some private time upstairs" I whispered. A second later, there was a knock at the door. "Who's that?" I asked. "Oh no, I bet its Emma again" Danny replied. Emma!? I hated Emma. She had been after Danny since we had been going out, trying it on with him several times since, but I wouldnt let her anywhere near him. Though I must admit she was a good looking girl, but Danny was taken. I was convinced that if she thought I wasn't here, then she would try it on with him. So, for the experiment, we both agreed that I would hide and let Emma in, to see what she was up to...
I went and hid behind one of the armchairs as Danny answered the door. And to no surprise, stood Emma. I was under no illusions as to what she was up to, noticing straight away that she was all tarted up and ready to try him. It looked asthough she had just come from work, wearing black high heels, black tights, her suit was also black, but her skirt was far too short for wearing for work. Her shirt underneath was also undone an extra button or two. "Hi Danny, can I come in?" "Sure." They both sat down on the sofa. "So wheres Sophie today, is she not here?" Nah she went out shopping with her mum." I watched Emma's hand as she moved it up his leg and onto his crotch. "Come on Danny, lets not waste time, you know why im here. I want you, and you want me." She whispered in his ear as she started to move her legs around him, like she was a python moving in on its prey. At this point, it was so trempting to jump up and kick the crap out of her, but I was sort of enjoying it, knowing Emma wanted someone who was mine. "I have a little surprise for you Danny. Put your hands behind your back." Danny obliged, and to both our surprise, Emma pulled out a roll of duct tape and quickly wrapped it tightly round his wrists. "What the- "I guess i'll have to have you my own way." She sat on top of him with one leg either side of his waste, and to my disbeleif, pulled her knickers off infront of him, and waved them in his face. "You like these"? As he opened his mouth to answer, Emma stuffed her knickers in his mouth, and put a strip of duct tape over his lips before he could spit them out. "Aww now look at you, all bound, gagged and helpless. If only Sophie was here to help you." Danny mmmphhed loudly, but found it hard to move and struggle because she was sat on top of him, she also had her breats the same height as his head. Which made her seem more dominant, and she was looking down at him. Now I just wanted to tape her up myself, but no, I waited.
She carried on teasing him, pulling down his jeans and boxers, with her hands on his legs, putting her head close to his cock. After she had unbuttoned her shirt, pressing her breats into his face, she lead him upstairs. "You wanna do me in your room huh?" She whispered in his ear once more, and licked his ear from bottom to top. Once they had dissapeared upstairs I followed them, the only thing in my mind was to give Emma a taste of her own medicine, and tie her up with the duct tape. (Me and Danny are into bondage anyway, so she better be) When I walked into his bedroom, Emma was ontop of Danny with the tape in here hand, I approached her from behind. "Hey, leave my boy alone!" I gave her my knee, into her stomach, forcing her to bend over, but she kicked my legs away and I fell to the floor. (Theres nothing hotter than a girl fight) As she lent down to hit me I wrapped my legs around her neck, (yes im very good with my legs, just ask Danny) and pulled her to the floor on her stomach. I put my weight on her so she couldn't get up, pulled her arms behind her back and taped them as tight as I could. "You don't like that, do you, bitch?" I punched her in the side before rolling her onto her stomach, pinning her down with my legs. Once I had duct taped her mouth and tied her, I left her squirming around on the bedroom floor, like a pathetic worm.

I untied Danny and asked him to do something similar to me, we started having sex infront of Emma, which is probably the hottest thing ever. Think about it, doing your boyfriend infront of a girl that wants him so bad but she cant do anything about it because she's completely helpless. After a few minutes, Danny was slamming his meat inside me, I tightly wrapped my legs around his waist, so he had no choice but to carry on shagging me. By now he was moaning loudly, close to orgasm, the sound of his cock coming in and out of me was too much to bare. I had myself wrapped around him and eventually we both exploded, we were both so energetic and noisy, right infront of Emma. did we let her go in the end?
Maybe.