Heads you have to give some head

With a smile and a flick of the finger my girlfriend sends the coin spinning into the air. With a ring it lands and as we look down I see heads. Shifting at what that means I feel my girlfriend get up and grab something from under the bed. Looking up I see she has a large strap on in her hand. "I don't... " I begin before she puts a finger up to my lip.

"It is easy trust me, once it is there you will know what to do like this" She says before slipping the dildo in her mouth and sliding it in and out of her mouth with practiced ease. Spreading her legs she attaches the strap on and moves over to me. "Do you trust me" She says her strap on almost poking me in the eye. "Yeah" I say quickly.

"Then open up" She says guiding the plastic dick to my lips. Pausing for a moment I open my lips and feel the rubber shaft shoved in before I can change my mind. As I start to bob my head up and down hesitantly I hear my girlfriend say "For this to work the fastest and the best one person needs to dominate and one needs to submit completely letting themselves be shaped by the dom, so whatever I do from this point on is to further that like we talked about."

For a moment I fight it but then I just relax my mouth almost working on it's own. "Lick it as you blow me" I hear and start to comply without thinking. Bit by bit I start taking more into my throat as my minds starts to haze over. "You love sucking cock don't you slut" I hear my girlfriend say but something is different in her voice. As I start to move faster on the dildo I realize how fun it is, and how great it tastes too which is strange.

I hear a new sound almost a high and femine moan and then it hits me. That is me I am making that sound. Before I can even process that thought a set of strong hands grip the back of my head and start to **** me to go faster. I can feel things changing but I can't look down enough to see my body. My mind races but I remember my girlfriends words and relax knowing what I am doing is safe, and fun.

Before I can do anything else the hands gripping me start to just **** me down on the dildo face fucking me with it like a peace of meat. I feel my mouth warm up as I hear a groaning sound. As a slight taste enters my mouth I realize what had just happened just in time for a hot load to explode inside my mouth . "Swallow it slut" I hear but I am lost in the amazing taste in my mouth. I drink it down licking the shaft clean.

As the object in my mouth withdraws I see it is no longer the black rubber of a dildo, instead I see the smooth wet skin of a massive cock. Looking up I see a large man standing over me who looks vaguely like my old girlfriend. My mind hazes for a minute before i realize that this figure is my boyfriend, silly me. Looking down at my sweat covered body I see I am what my boyfriend wanted me to be, a slut. I have huge almost unrealistically large tits that bounce with the slightest movement. My thin smooth body is hairless but wet with long thin legs that shine with a thin covering of sweat.