Winding up at the camp hadn't been intentional, but Noct kept insisting they go in that direction and suddenly Gladio had been faced with a decent amount of his housemates - the housemates he completely walked away from without a word.

As soon as he'd seen Ravus he tried apologizing but the man would have none of it and completely ignored him. That hurt.

On the airship Gladio has a lot of time to think. And by the time he gets to the house, he fully realizes how much of an absolute ass he's been. Now not only has he managed to lose his baby sister, but he's completely ruined whatever had been building between himself and Ravus. Not to mention that he'd only added to his friends' worries and wound up putting Noct in danger, considering he'd been ready to just abandon him on his hunt but he wound up dragging his charge along on his fevered search.

Seeing Ravus on the porch only makes the truth of his actions hit him harder and Gladio stops a few feet away, looking at Ravus with uncertain eyes.

"Ravus... I - I'm sorry." He knows the words aren't enough. He's pretty sure nothing is enough.