He can see the way Aerith's vibrating, strumming with an anxious energy, and the glance Kunsel spares Zack shows him with a restrained, morose expression until he has to greet Elmyra, at which point he gives her a clearly forced smile.
They've clearly… talked, but about what? Kunsel tries not to overthink it, if anything, he was trying to not think about the implications of Zack's return because he wanted it, he wanted Zack to come back - and he did! So it was all good now, right?
But Aerith's like a whirlwind, needing to do something, to make space between her and Zack… and seeing that Elmyra was fussing and scolding Kunsel over his unannounced visit, she was quick to gather her mother's attention and guide her away, set to prepare a room for Cloud.
Kunsel has half a mind to reach out for her mind, but his hand awkwardly lingers by his side as she whisks herself away upstairs, and he clenches it awkwardly remembering again: Zack is here.
There's only a breath of silence before Zack settles by the kitchen table, hiding his face in his hands, the perfect picture of a man defeated… and the guilt that he'd worked so hard to push past over all these years, the second guessing, the ever present feeling of how shitty of a friend he was being; it all just boils over and he has to bite his tongue to not confess right then and there.
It's me. I did this to you.
"… She did. I'm sorry, man. It blows." He sounds a little funny saying it, like there's a catch in his voice, his sentence awkwardly cut off before he could say more… and he doesn't elaborate. Instead he moves over, pats Zack's shoulder with his damp glove in what he hoped was a comforting manner. "If it makes you feel any better… I think she still loves you, just… not like that. She waited for you for years, y'know, was the only person that still believed me when I said you were out there."
And like a coward he doesn't confess - the time wasn't right, they were both on edge, he'd just gotten back and was just processing that Aerith broke up with him… He had all the excuses he needed.
"And if you ask me, you being here at all makes everything suck a little less. Seriously man, I know it's a lot to process but I'm glad you're here." Kunsel sighs, then crosses his arms, pleased to find his uniform drying quickly. "We should talk, the three of us, later tonight." Then, he tells himself. Then he'll say it. "We have too much to catch up on, and we gotta decide on what we're gonna do next."