Becoming My Sister Pt. 03

Part 3

Chapter 5

As I continued my worship of his beautiful dick a million thoughts were running through my increasingly feminine brain. It was like every second I had his dick in my mouth another piece of masculinity faded away and was replaced by an increasingly dominant female alter ego. Every drop of cum in my mouth erased yet more of the male me....these thoughts blew my mind and all I could think about was getting as much of his beautiful dick and it's cum to make me as girly as possible! I knew there was one thing which would truly complete me and make me feel 100% like a girl. I prayed that Brad would want to do this to me...over and over and over again!

I was still so excited to hear that my perfect sister was 'frigid.' I resolved that I would be the complete opposite and I hoped the way I was sucking Brad made him think that I was...eager to please him, willing to try anything, my female submissiveness the perfect match to his male dominance! Oh God, I wanted him to take control of me and use me the way that all beautiful slim blonde teenage girls in the porn I exclusively watched were used!

I loved when we made eye contact as I sucked. It made me want to show just how good I could be for him, why he should want me instead of my sister. All those lonely hours in my room watching internet porn, watching all those beautiful girls, watching what they did to please men...they were like training sessions for me and today was when all that training would be finally put into practice! His groans of pleasure left me in no doubt about how successful my training had been. I released him from my warm, wet mouth and asked, "Am I pleasing you? Tell me if I'm not, tell me what you want me to do, tell me what you want to do to me.'

I was sure my sister had never said that to him. 'Mmmmm good girl,' Brad replied with a glint in his eye. 'I want you to be the Aimee I deserve. I want you to focus on pleasing me...not the other way round like it usually is. She thinks the world revolves around her, even in bed. I want that to change but that will never happen with her. It will with you though, I think,' he said and held my head and pushed my mouth down over his hard dick, holding me in place as I gagged. OMG! I thought I was gonna choke to death and could feel my eyes watering before he finally relented and I looked up at him. I could see the pleasure on his face! I smiled at him, loving that I could please him in ways my sister certainly wouldn't and probably couldn't do.

'Wanna be my 'girl'? Be my dirty little secret 'Aimee'? Be the one who pleases me the most? Take your sister's place in my bed? Do all the things she won't?' he said. I think we both knew the answers to all those questions before he even asked them!

I remained laid on the bed and watched Brad go to the en-suite and return with a bottle of baby oil in his hands. 'I think it's time for you to show me just how much you want to be your new improved sister,' he said grinning as he let the oil drip slowly onto his rock hard cock. I stared wide eyed as I knew what he was demanding.

Over the last few months watching internet porn I had pretty much exclusively cum imagining I was the girl rather than the guy. Imagining what it must feel like to take a big thick hard dick deep inside me. Willingly and eagerly letting a man enter my body, feeling him stretching me, hearing his moans as he feels my tightness gripping his hard dick. Hearing and feeling the slap of his cum filled balls against me, the rhythm building slowly, getting faster, his breathing shallower until the release either deep inside me or over my face, my breasts, my tummy my ass...anywhere he wanted that would please him. I knew that this was my destiny, that all my fantasising and obsession with being my sister had led to this moment. I could suck a million dicks but until I had let a man fuck me I would never truly feel like a girl.

As Brad climbed back onto the bed I instinctively got on my hands and knees, long blonde hair laid over my arched back. 'Good girl,' he almost growled as he moved behind me. My heart was pounding with a mix of excitement and nervousness. My body was trembling as I felt his strong fingers pull my thin white lace panties down so they were around my thighs. My small, still limp dick hung free...I still couldn't believe I wasn't rock hard as I always was when I dressed in my sister's clothes and even more so because I was in her bed with her gorgeous boyfriend. This must have been my feminine brain taking over and controlling my body. I had no idea if Brad would want to touch my dick but I hoped he wouldn't. I wanted to feel 100% like a girl for him and I think the spell would be broken for me if I did get hard and he did touch me there.

My mind quickly refocused on the fact that my sister's boyfriend was knelt behind me with his big, thick hard dick oiled up as I felt the warm baby oil drip between my cheeks, over my 'pussy' and down my smooth shriveled balls. I moaned with pleasure as I felt his hard dick brush over my ass cheeks, before I felt him gently press the head against me. I felt more oil drip onto me and my fingers gripped the bed sheets as I felt Brad's strong hands on my waist holding me in place.

I bit my lip as I felt him push forward, all his weight focused through his rock hard dick, I gasped out loud as I felt his head begin to open me up, slowly stretching me, the baby oil working perfectly to ease the path for him. Thinking back I find it very hard to adequately describe just how it felt. It was to my mind as though the entire universe was focused on the interface between Brad's hard dick and my 'pussy'. Time seemed to stand still as the most incredible feelings ran through my body and mind. His breathing seemed incredibly loud and it was like he had electricity running through the fingers that gripped me and held me in place.

I cried out in a mixture of pain and ecstasy as I felt the big head 'pop' inside me. I felt Brad's grip on my waist lessen a little as he had now broken through and was now comfortably inside me, an inch of his shaft also inside me now. He held still, letting me get used to his size. My eyes were rolling to the back of my head as I tried to comprehend what was happening to me...I was fully made up, dressed in my beautiful sister's lingerie and high heels, on my hands and knees in her bed with her gorgeous boyfriend's big, thick hard dick slowly entering me from behind!!!!

It was what I had fantasised about for so long and now it was coming true...I could hardly believe it and I looked over my shoulder just to make sure this wasn't all a dream and I'd soon wake up. It wasn't a dream as I saw Brad with a huge grin on his face, as he lifted his left hand from my waist, placed it on my neck and pushed my head down. I heard him groan as he pushed forward and felt more of his beautiful dick sliding inside me. I thought that If I gripped the bed sheets any harder my long nails would tear clean through them!

I cried out in ecstasy as I finally understood what it was like to be a real girl! Sucking a dick and tasting another guy's cum felt like my masculinity was being slowly melted away...feeling a guy's dick inside me and fucking my 'pussy' was like someone had taken a baseball bat and smashed my masculinity into a million pieces with one swing! I just wanted to scream from the roof tops, 'I'm a girl, I'm a girl, I'm a real fucking girl!' I think a nuclear bomb could have gone off next to me and I would barely have noticed so lost was I in the utter ecstasy that having a guy's dick buried inside me was bringing me!

I felt my warm baby oil drip onto me as I felt Brad slowly rock his hips back and forward, slowly fucking his new secret 'girlfriend'. I moaned with pleasure as I felt his dick touching me in places no one had ever touched before. My sister's gorgeous boyfriend taking my virginity in her bed...OMFG! It was almost too much for my mind to comprehend! I bit my my lip and held on for dear life as he started to fuck me more rigorously, the rhythm building as I instinctively pushed back to meet his strokes. 'That's it, baby,' he moaned. 'Come on, Princess, fuck me back,' he said excitedly.

When he called me 'Princess' I could have cried with happiness. In so many of my fantasies I'd always wanted to be called 'Princess'. It was just the epitome of pretty girly, submissive femininity...a girl in need of her Prince Charming to complete her! I'd always fantasised about how amazing it would be to be a real life Princess like Kate Middleton and be married to a Prince and then, in time, a King. 'Call me Princess,' again I almost begged as I pushed back harder against him. 'Please please please,' I moaned.

'You're my Princess,' he said, 'My beautiful, dirty, delicious Princess Aimee,' as I felt his hips circle round, stretching me in different ways, bringing me one amazing sensation after another. I could feel his thrusts becoming more urgent, faster, deeper, stronger. His hands gripping me so firmly I would probably have bruises in the morning but I didn't care...they would be a delicious reminder of what my sister's boyfriend had done to me and what I now was...HIS PRINCESS AIMEE! He'd told me that and I'll never forget it!

'Oh Princess, oh Princess, oh my Princess Aimee,' he cried out and thrust so hard he almost lifted me off the bed. I squealed as I felt his dick almost rip me in two as it seemed to swell and I felt his warm cum shoot deep inside me. OMG! It was amazing to feel the power of his cum hitting my insides as he bucked wildly, his moans of ecstasy filling the room as he filled me with his cum over and over and over again! It was painful but I embraced it completely...it was all part of being a 'girl' and I would take any level of pain if it meant I was his Princess!!!

To be continued...