Maybe
Maybe realizing the man you're in love with is actually your half-brother is never nice. Not that he has heard of it happening before it happens to him.
"My husband was a trainer," the woman sighs over her tea. "He left for Johto when Red was three years and never came back."
Gold flinches at the words and immediately feels stupid. Maybe— no, no, no... It's impossible. Even though the times and ages match... even if his father is originally from Kanto and used to be a trainer and is older than his mum, (just the age of Red's mum,) even still it's impossible.
"What's his name?" he finds himself asking. It's only to calm his nerves, he tells himself, only to stop his imagination running wild, only to—
The name leaving the woman's lips seems so far away and he thinks he must be hallucinating before death. That's what it feels like, there's just no other way.
"—maybe you've heard of him?"
"...huh," he manages. The woman smiles, albeit a bit sadly.
"I just wish Red didn't take so much after him... he needs to come home already."
"I need to go," Gold says so fast it's a wonder he can recognise the words himself. "Thanks for the tea ma'am."
"You're welcome," she says (surprised) as he stumbles out of his chair and starts towards the door. "Come drop by anytime."
Once outside he lets out his Noctowl and flies off. He was supposed to visit the professor and maybe drop by Green's sister's house—Daisy, isn't she—but now he has more important things to do. Things that involve a cold mountain holding the same name as a cold boy too familiar to him and a seemingly cold man that lives there, whose eyes are anything but cold.
As he falls to the snow from the sky telling the bird to do whatever and return then back here, Red comes out. He's always like that; anticipating his arrival or anyone's arrival (if he was a pokémon he'd be a Toxicroak, now there's a thought) and nobody can surprise him. (Or maybe he's a psychic-type with forewarn.)
Gold throws himself on the man and can't bear to speak, eyes lost and pleading and seeking comfort from this man that isn't his brother and still is and he stubbornly refuses to accept it.
Red stays silent and holds him, soothing away his doubts and shock with gentle strokes. When he is calm again the older pulls him even closer and he feels certain that his heart will burst. (So much for calmness...)
As the man claims his lips (or he demands for a kiss, he doesn't know) Gold isn't sure if loving your brother like this is really that wrong, and as they move together in perfect rhythm and he suddenly sees all the little things and how they are oh-so similar, he smiles.
Maybe he doesn't care.
End
I blame it on stalking to much on the kink meme and seeing all the weird theories there... I don't really support this, but I had a lot of fun with it.