Gladio would have, if he knew, told Prompto it was okay. He didn't mind being used. Really, he and Ignis had discussed more than once if Prompto and Noct were actually in some kind of a relationship or not. It had started out as a rather nasty argument between them because on one hand, Noctis was supposed to be getting married to Lady Lunafreya, but... it was Noct, who needed to have real love, some kind of real life. Let him love Prompto, even if it was going to hurt them both. Ignis had dryly commented that he had never found any... physical evidence that a relationship was occurring, certain that between their two younger charges one of them would be unable to hide it from him, but Gladio had only shrugged and pointed out that if they were really that determined to hide a relationship, they would. Besides, not every relationship was physical.

If they were using each other, in their own ways, was it really so bad?

Prompto had long since become something more than just Noct's tag along friend and Gladio would have given him a piece of his mind if he knew. Prompto had become a friend to all of them, a brother, something so much more than they had a word to explain. There were only three people still on this plane who understood what they had gone through. How could he not be something more? ...True, his actions after Noct had been taken from them... probably hadn't helped any. How he had run in the face of his anger and shame.

BVut the laugh, the punch to his arm, loosened the air and he could give a small smirk back. "Old man's just jealous he can't get it up anymore; just ignore him." He brought his hand up just enough to be able to ruffle the chocobo-butt hair. "Just tell him that. He'll stop." And probably throw something, but he couldn't even imagine those kinds of words leaving Prompto's mouth.