Albus groaned, the sound low and guttural when Gellert finally joined their bodies again. It melted into a nearly continuous stream of increasingly keening moans- there was simply no help for it. Apart from the way his senses felt entirely dominated, every profound thrust of Gellert's hips sent his cock stroking smoothly along his prostate, and with every stroke of Gellert's hand, Albus was very close to trembling. His arms twined around Gellert as much as was possible, barely aware of the way his fingers bit and scraped along Gellert's skin.
"Gellert--" he practically choked out, a vague warning to the syllables. Because it was all just too much, Albus was losing track of himself. Magic flashed from his hands, sparking blazes of heatless, tingling flames. Harmless, but irrepressible. Some part of him ached to weld the two of them together, a desire somewhat sated when he let himself brush along the threads of Gellert's magic - that deep, violet, volatile magic - though it inspired a dizzy sort of gasping. All of it, all at once, it was simply too much. He was going to unravel completely. And if Gellert didn't still his hand Albus was quite sure it would only take half a dozen more strokes of Gellert's hand to having him coming apart.
Gellert's breaths quickened when Albus dug his nails into his skin, suddenly thrusting just a little bit faster, bracing one of his forearms against the bed for leverage. Albus's magic, released so unexpectedly, only served to fuel Gellert's heightening ecstasy. It would not be long now. Not for either of them, judging by Albus's face and the way he practically writhed around him, or the cool flames that still licked along Gellert's spine. Conscious of Albus's near-obsession with symmetry, Gellert released a bit of his own magic as well: a light frost began to spread out across Albus's skin from Gellert's fingertips, creeping over the ridges of his ribs, ice crystals forming from the thin veil of perspiration that laced Albus's body.
Kissing him again, Gellert let his eyes fall, fluttering slightly, closed. He wanted to feel this as intensely as he possibly could--the contrast of their magic and the heat of Albus's arse and the swelling pleasure below Gellert's own stomach. Albus's lips were soft and malleable beneath his own, nearly more familiar than the feel of the Elder Wand in his hand. Almost a part of him, by now. Gellert's thrusts became slightly uneven, arrhythmic, but he was no longer bothering to follow the pulse of his heart--it throbbed too quickly now, and to go any faster may cause Albus pain. The rationality of it existed only on a distant level of Gellert's awareness, though. He was drowning deep in the waters of his own hungry lust and he could no longer pause for elegance.
For approximately five seconds, Albus seriously considered whether or not he was dying. Heart battering wildly in his chest, mind entirely unable to pull apart distinct sensation, he kept trying to catch his breath. Every hastily drawn breath, however, nearly immediately faltered past his lips just as quickly, as if jostled loose by the way his body practically bucked beneath Gellert's. He felt Gellert's magic seeping out across his skin almost before the chill that followed; it nourished something deep and quietly ravenous within him, the way it way Gellert just... fit with him. The entirety of existence collapsed down to a moment of rapturous, crystalline clarity-- Gellert couldn't be separated from him. Whatever Gellert had done, or might have done, it didn't matter. One of Albus's hands dove into a fist of Gellert's hair, the other raking down his back leaving thin tongues of fire in its wake. Something close to a cry broke around Gellert's name as it muffled against Gellert's mouth and Albus's bowed up off the bed as he came, his release pumping over Gellert's knuckles and smearing between their stomachs. As pleasure pummeled through him, Albus couldn't sort out a way to let go of Gellert, so he let his body simply cling in anyway it could find.