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He moves inside of her, and it is heaven.
Hot, heavy breaths pass by each other’s ears as chests press and shift against each other, desperate to be as physically close as possible. Years and worlds between them have made them ravenous, fuelled by regret and mourning as they each silently pondered on, “What if?” in the privacy of their minds. There had always been a magnetic pull between them, but barriers were kept (almost) firmly in place for their own reasons.
Their risky flirtation and intimacy had been the inspiration for many lonely nights underneath covers and in console rooms, names hanging off of their tongues as they allowed themselves to feel and grieve what could have been, their minds exploding and flurrying with fantasy.
It isn’t anymore, though.
He fills her perfectly, as though he was made for her, and he knows he was. A kiss shared to save her life, leaving her DNA lingering on his lips as he shifted and transformed to save himself. As the golden tendrils danced through him, he had known that he was to become everything she wanted and more. Imprinting himself in her existence; moulding himself to be what he wanted to be to her.
Each time his mouth messily meets hers, his tongue acquainting itself with hers, it affirms to him that this body is for her and her alone. Her fingers are tangled in his locks, twisting and gripping as he thrusts in and out, stroking the sensitive part of her within. Her brow is furrowed, lips are parted and her eyes are darker than he’s ever seen them, and his stomach twists in a funny way and his singular heart pounds ferociously.
He had never thought he would see her like this and it scares him a little. Her tiny, honeyed moans and deep groans and, “Doctor, oh, fuck ”s terrify him even more. She is needy and feral beneath him, chasing him eagerly and with intent. She has spent far too much time alone and this is what will give her solace.
He is willing and enthusiastic to provide as he grunts and whimpers against her damp skin, feeling her clench around him and his resolve quickly fading. He wishes for his old body, a stronger threshold and the ability to hold out for more than just a few minutes, but he knows he wouldn’t change it for anything else this universe could offer him.
Eyes lock when his hand slides between them, circling and stroking what he has wanted to witness for so many years. He watches her climb the ladder, tensing up all over as she anticipates the fall. She clutches onto him so tightly that he is certain his skin will be tattooed with her crescents when she breaks, a cry escaping her lips and face scrunching up in a way that he wishes to capture in photo and pencil and paints and constellations as she reverberates through him. She doesn’t say anything, but her pulses are silent thank yous.
He returns the gesture accordingly, burying his face into the crook of her neck as he slams deep into her, spilling inside of her and satisfying that primal, possessive urge he had always felt about her since those early days of blue irises and cat flaps. For a split second, thoughts of children and the future flash in his mind, but he decides that is an adventure that will arrive when it does. For now, he has her and that’s all he needs.
She caresses his back and holds him against her, tethering their bodies together and seemingly reluctant to let go. He understands and cradles her, feathering her skin with kisses and whispered promises in both of their native tongues.
The pale moonlight drapes them in white and the waves crash and roar outside, taking them further and further away from where the TARDIS and his original self had stood mere hours ago, offering her a choice. A choice she knows she will not come to forget, even as the ocean washes away the perfectly square imprint and remaining particles of the prime universe.
She had once chosen forever with him, but he realises as he stares at her bare back and draws shapes against her hip that they have chosen something even far better than that.
Together .