"Fuck...  fuck fuck fuck I’m gonna come in a second," Draco gasped above him, and he tugged on Harry’s hair to try and pull him off, but Harry tapped his thigh to make him stop, and instead buried his face further into his groin, sucking with a renewed vigour. Draco only managed a final shuddering intake of breath before he was spilling into Harry’s mouth. Harry had a split second where he realised, he needed to decide between swallowing and spitting, something he should probably have considered before letting Draco come in his mouth - he swallowed reflexively, still moving his mouth in small, aborted movements up and down Draco’s length until Draco hissed, and his fingers in his hair tightened to gingerly encourage him to lift his head up.