Lady Artemis would be ashamed of how often she thought about him. Hades, she was ashamed of how often she thought about him. She was Thalia Grace, leader of the Hunters of Artemis and daughter of Zeus. She needed to set an example. She tried to avoid it, keep herself busy chasing monsters or watching over the other huntresses.
Yet on those lonely sleepless nights, all thoughts of the hunt were gone. She would find herself gazing up at the stars and remembering. Remembering watching the same sky with him, speaking sweet promises to each other. Family, he would promise.
Too good to be true.
They kept each other warm on those cold cruel nights on the run with just the other's presence alone. Knowing they had someone by their side no matter what. At least that's what they would say.
He wasn't by her side anymore. Never again.
Of course there were some nights when his presence wasn't enough to keep her warm. She would never say anything of course. She was too stubborn and proud. Thalia Grace, Daughter of Zeus doesn't get cold.
The cold never seemed to leave her now. Not with him gone.
But he knew. He always knew. When it came to her at least. And he would inch closer until they shared their heat with each other. Sometimes as she was drifting off to sleep, she would feel him brush the hair out of her face, lift her head onto his shoulder, and hear him sigh contently.
It was all her fault.
He was her best friend, her partner in crime, her rock. He never let her down. Never.
At least that's what she told herself.
And she would continue to stare up at those same stars and she would think, how did we get here Luke?
You're never coming back and I'm alive forever.
And on those lonely sleepless nights, she allowed herself a single tear. A tear for the boy she once knew. For the man she might have been able to save, if only she hadn't been gone for so long. A tear for another family, irreparably broken.
After that single tear had been shed, all thoughts of the boy who had travelled with her and protected her were replaced with remembering the choices he made and the world that constantly needed saving and she became once again Thalia Grace, the Daughter of Zeus and leader of the Hunters of Artemis. And she continued to do what needed to be done.