Hearing those words took the breath from Harry's chest and he couldn't help but let a silly little grin play on his lips as Jack became his seat. He shifted into a more comfortable position in Jack's lap, head snapping back to stare, wide-eyed, as Jack referred to Harry as his boyfriend. His cheeks burned red but he flashed a genuinely happy smile, craning his neck around enough and bringing his hands up to cup Jack's face to give him a proper snog. There it was, the word 'boyfriend'. It didn't really change anything, but Merlin it felt good to hear it.
As much as he would have liked to just snog the night away and straight on into the New Year, he pulled away after only a few seconds and managed a sheepish grin, hiding it behind his drink which he had to steal back from Jack. He set his hard cider back down, one hand sliding down to join Jack's at the hem of his shirt, playing with long fingers idly as butterflies tickled along his insides.