Growing up with a brother, you always did things together. Gabriel and Gideon were no acception, although Gideon was so much calmer, Gabriel sarcastic and rude. Yes, Gideon was able to calm his younger brother, but sometimes only barely. He sometimes longed to touch, to hug his brother, but he knew that Gabriel would lash out. It was
Forbidden.
Gideon had always felt strong emotions for his younger broher, but the feelings all changed when Gabriel was clawed in the chest by a demon, so badly that before Gideon had finished off the demon, Gabriel was almost unconscious from bleeding out. The elder Lightwood dropped to his knees in front of his brother, forcing himself to stay calm, to not let his fingers tremble as he ripped the mangled shirt from his brother's prone body.
Forbidden.
The word whispered through Gideon's head as he absently traced the iratzes he'd drawn that were already beginning to heal Gabriel. The younger coughed and Gideon looked up at emerald eyes. They were dull but still fierce and shining. Something tightened in Gideon's chest. Gabriel said something, it looked like that word
Forbidden.
but Gideon couldn't hear him, juat saw pale pink lips moving, and he leaned down (and couldn't hear) and just kept leaning (and still couldn't hear) and then he kissed his younger brother.
He found later that his younger brother was saying
Forbidden
Gabriel had drawn away after that, so much that Gideon saw him only once or twice a day. And when they did meet, Gideon only glared. If he spoke, it would be a cutting remark, worse than even William Herondale could come up with. Until Gideon had done the
Forbidden
and peered into his younger brother's room after hearing low, breathy moans. And stopped short, because there was Gabriel Lightwood, half sitting, half laying, on his bed, head tipped back against the headboard, a fierce flush on his face, eyes screwed shut, and…
Gideon drew back at that, then rubbed his eyes and looked again. Yes, there was his baby brother, slowly stroking an erection.
And what came out of his trembling mouth then was the most
Forbiden
thing of all.
"Gideon…" Gabriel sighed it again, his hand speeding up. Gideon, outside, unwillingly let his hand creep down to the forming bulge in his trousers. By the Angel, it was so
Forbidden
and if anyone knew, what would they say? Disgusting, vile,
Forbidden
But he didn't care at the moment. Gabriel would thank him…
Gideon moved towards his brother and took Gabriel's hand in his, moving it away to replace it with his own. Gabriel's eyes shot open and he shot at Gideon, capturing the elder's lips in a fierce kiss.
What was left to say was, that even though Gabriel was the most
Forbidden
person he could've chosen, it didn't matter. Gabriel, asleep, nuzzled closer to Gideon, face relaxed and happy, the most innocent Gideon had ever seen him.
It didn't matter, the elder thought again, as he got up and shrugged his clothes on again. Gideon paused and gently ran his thumb across his brother's cheek, smiling softly, before leaving
It didn't matter how
Forbidden
it was, because when Gabriel awoke, they would only be brothers.