Fucking My Best Friend's Boyfriend in Her Bed

The three of us, Tara, Dean and I, had hung out with a group of friends that day. We hung out at our local. We were underage, but no on asked questions. Eventually the crowd went their separate ways and the three of us were left at Tara's house. We were in a bedroom for some reason, and there was a massive flat screen TV on one wall. Dean jokingly suggested that we put on some porn, Tara being the prude that she was, shut him down. They had been dating for nearly a year but Tara was reportedly saving herself for marriage. Dean was my best friend. We talked about masturbating, and just before he started dating Tara, we had plans to be masturbation buddies. Sadly it never happened. We were all chatting, when Tara got a call from her mum, asking her to pick up a little brother from school. "Back in an hour" she said as she left. "So how about that porn?" I said, only half kidding. "Ok!" He said quickly. He put on a bondage video of a girl giving a guy a blowjob while cuffed and positioned over a vibrator. It was insanely hot. It got even hotter when the guy left and the girl was practically screaming in pleasure. I saw a tent forming at the front of Dean's jeans. "Excited, are we?" I teased. "Shut up," he grunted. "Don't worry, I'm in the same boat." We fell silent and watched as the guy came back and started to fondle the girl's tits. I was so wet and my clit was throbbing. Dean was shifting uncomfortably. "I don't mind if you want to... Take care of that." I said. "Really?" I nodded. "Oh thank god." He pulled down his pants and tugged his cock out of his underwear. Wow. For a teenager, he was big. Really big. I couldn't help staring. He smirked at me. "You feel free to go ahead too." He said this as he closed a fist around his erection and moved his hand up and down. I shook my head, the few drinks I had had were going to my head. "Why don't I just help you?" I moved over to him, urged by the porn and the alcohol, I smiled in what I hope was a sexy manner. "Wait, what?" He sounded confused, but not objecting. I knelt between his legs as he sat on the edge of his girlfriend's bed. His jeans were around his ankles, and I pulled them off, kissing the inside of his thigh. "This is so wrong." Dean exhaled. I slipped him inside my mouth and began to suck gently. His mouth opened as his eyes closed. I moved his cock in and out of my mouth with my hand. "This is so wrong." He said again. "What about Tara?" I took my mouth off his penis. "If you want me to stop, just tell me." I said. "Please don't stop." I began blowing him harder, sucking and swirling, kissing and exploring, as he moaned and gripped my hair. I felt him tensing when he suddenly pushed me away. I frowned. "What's wrong?" I asked. "I'm not finished yet." He leaped at me and started to kiss me. I lay back on the bed as we made out. My head was resting against Tara's pillow as her boyfriend cheated on her with me. He unbuttoned my blouse and started to roll his fingers over my nipples. My bra, just a layer of fabric, was obstructing the skin on skin contact, so I slipped it off. He drew his mouth away from mine and buried his head in my bosom. He kissed my nipples and my back arched as he began to suck. I felt the join so many women talk about between my clit and my tits. I didn't know how he hadn't done it with Tara but was so good at this. He tongued my nipples gently as my hips buckled and I ran my fingers through his thick hair. I felt my clit throbbing and moved my fingers roughly down to it. I started to slide it side to side, lubricated by my wetness. Dean crawled down the bed, kissed my fingers and moved his lips to my dripping pussy after lifting my skirt. Lighting bolted through me, surged so high by my slight tipsiness, the unexpected excitement and the infidelity he was committing. I came unbelievably fast from this as I pulled my own nipples hard. I moaned as I writhed on Tara's bed. His cock was still rock hard, and having pleasured me, he moved his own hand down there. He looked at me. "Would you...?" "I have a better idea." I said, I hope sexily. I pushed him gently so he was lying on the bed, 8 inch dick pointed upwards. Having removed my skirt and his shirt earlier, we were both completely naked, and he was so hot. I moved over him and eased my pelvis over his, slipping his cock into my dripping hole. It was tight, but I think that made it better for both of us. His girth was wide, and the pressure was good as I started riding him. He pulled my shoulders down and kissed me as he thrust himself into me. It sunk in what I was doing, and I felt so dirty and so hot. It was so wrong and so right. As I sat up again, he played with my clit while I pushed up and down, up and down. He pulled out eventually and jerked himself quickly. He reached down and finished me off too, which was selfless and kind. We lay there, in each other's arms, enjoying the other person's company without having to exchange words. He traced his fingers over my arms and my back as I lay with my head on his chest. It felt like such a permanent moment... Until we heard the front door close and Tara's voice yell: "I'm back!" I've never gotten dressed so quickly in my life!