Damn You, You're Amazing

Liam can't help but stare. This boy is the epitome of everything he wanted to avoid in his life, but this feeling that creeps into his chest makes him think that he was wrong all along.
The way he concentrates while he draws, his lips parted and tongue pushing at the back of his teeth, jaw loose and his brow furrowed as his fingers smudge the trace of the pen make Liam's throat suddenly too dry.
Sophia never made him feel like this.
Or:
They're forced to spend the summer together after so many years. The air is too hot and the sea is too cold and Liam can't decide if it's because of the weather or because of this guy that doesn't resemble his best friend anymore. Liam tries to breathe but Zayn won't let him and they try so hard to hate each other that they end up screwing it up and falling in love instead.