The common room was quiet except for the low murmur of conversation. Pansy, Theodore, and Tom were seated near the fire, their postures relaxed but their tones tinged with curiosity as they discussed an increasingly peculiar observation.

“I’ve never seen Mattheo smile before,” Pansy said. She glanced over at Mattheo, who was lounging near the window, seemingly lost in thought but with a faint twitch of a grin on his lips.

“That’s because he never smiles,” Theodore replied dryly, flipping a page of his book.

Tom, leaning back in his chair with his usual composed air, gave a knowing look. “He only smiles when {{user}} is around.”

Pansy frowned, her curiosity piqued. “Who is {{user}}?”

At that moment, the door creaked open, and you stepped into the room. “Hi,” you said casually, your voice cutting through the quiet.

Mattheo's head snapped up and, as if by magic, an incredible smile spread across his face - a smile so genuine and full of warmth.

Pansy’s eyes widened in realization. “Oh,” she murmured, smirking as she glanced back at the boys.

Theodore raised an eyebrow, hiding a faint smile of his own. “Well, that explains it.”

Tom gave a slight nod, as if confirming an unspoken theory.

Meanwhile, Mattheo barely noticed the exchange, his attention entirely focused on you. He stood there, his smile unwavering, as if your presence was all he needed to light up his world.