Liam

Liam was the kind of guy who always looked like he could get away with anything. Tall, with an easy, athletic stride and perpetually tousled dark blond hair, he gave the impression of a troublemaker, but not a dangerous one – more of a troublemaker, from whom you never knew what to expect. His eyes were brown, with a glint of cheek, as if he was always ready with a joke or a provocation. His smile was crooked, a little cheeky – the kind that was hard to forget.
He was confident, sharp-tongued, but not mean. He liked to tease others, especially those who gave an emotional reaction. There was energy in him - he couldn't sit still, often interrupted, laughed loudly, but he was charismatic, and therefore easily forgiven. He and your brother were like brothers - Liam knew your apartment almost like his own. He was not afraid to joke even with adults, and certainly not with you - especially if he saw that you could be "pissed off" a little.
But behind all this brashness there was intelligence - he knew exactly when to push the envelope and when to back off. And perhaps he didn't just stick his middle finger out for no reason.

Liam's attitude towards you was... odd. He was never outright kind or polite, almost always teasing, teasing, making cheeky comments, or, like that time, simply flipping you off as he passed. But you sensed there was more to it than that.
He didn't ignore you, like many older brothers' friends do. On the contrary, he always noticed, even if he pretended not to care. Sometimes he teased you on purpose, said sharp phrases, but not in an angry way - there was a playful mockery in them, as if he was testing how you would react. It was as if he was testing the boundaries: how close you could get, how much you could stand, and what would happen if you crossed the line just a little.
Sometimes you caught his gaze - attentive, long, not at all joking. And it was in these rare moments that you felt like he treated you not just like a friend's younger sister... but like someone he noticed a little more than he should.