A brief fantasy (any/F)

I walk into your room and stand in the shadows for a moment, listening to your ragged breathing and watching you playing with your pussy, arching your back and writhing in your bed. I silently move over to stand beside you, and lift your covers off so I can see you properly. I notice your eyes crack open and register me, but you don’t falter or stop as I drink in the sight of you naked and fucking yourself with your fingers. I lazily trail one of my fingers down from behind your ear, over your neck and collarbone, eventually reaching your nipple. I circle your nipple lightly with my fingernail, never quite touching it, smirking as you curve your back to try and force my hand onto you. I push your chest down onto the bed, hard. I grab your hands and pull them away from your pussy, ignoring your noise of protest as I straddle you and pin your arms above your head. I take out a length of rope, and begin tying it around one wrist at a time. I tie each wrist to your headboard, spread apart so you can’t turn your body over, as you discover after an ineffectual struggle against the bindings. Now, it is my turn.
I gently stroke one side of your face with the palm of my hand, then I move it down, stopping briefly to apply a little pressure to your throat, just enough to make you gasp a little when I release it, before moving on to your breasts. I take one in each hand and massage them gently for a second, before bringing my thumbs up to skim the tips of your already hard nipples, using my hands to hold you onto the bed as you buck slightly. Again, I circle, but this time applying the pressure directly to your nipples. I start to kiss down your throat, starting with a small nip at your earlobe, sucking and biting a little bit as I go, leaving your skin slightly red. I move my body so my mouth can continue moving down between your breasts. I kiss down to your belly button, and pause to give a little more attention to your hip bones, nipping gently at them, before continuing. Your hips start to move slightly in anticipation as my mouth nears your pussy, but I smile against your skin as I move past it and kiss up and down your inner thigh, moving so close to your pussy each time I can feel your heat on my cheek.
Eventually, I relent, and I produce another set of ropes. Repeating my earlier knot around each ankle, I tie your legs apart, so you are completely spread eagled on your bed, exposed and at my mercy. I start at your ankle and kiss up your leg again. This time, when I reach your pussy, I run my tongue once along the length of your slit from top to bottom, pausing at your clit. I slowly start to flick my tongue in a simple pattern, up and down. My hands on your breasts stop rubbing your nipples, and instead I take each one between thumb and forefinger, and squeeze is lightly every time I flick your clit with my tongue. I build the speed up continually, until my tongue is constantly moving and I am rolling your nipples between my fingers rather than squeezing. When I can go no faster, I suddenly stop my tongue and suck your clit into my mouth, and bring my right hand down to slide two fingers into your wet pussy, curling them upwards towards where my mouth is rhythmically and gently sucking on your sensitive nub. Again, I build up a rhythm, this time my left hand holds you to the bed by your throat, stopping you moving too far out of my control, my right is sliding my middle and ring fingers in and out of your pussy, curling them upwards when they are fully inside you, and my mouth is sucking on your clit, my teeth occasionally brushing it. I pump my fingers into your pussy faster and faster until I feel you shake beneath me and you contract around my hand. I slide off you, undo your bonds, and leave you shaking, sweat-covered and wet.