Curate, connect, and discover
He implies she's worth building something new with, next thing we know he's wearing a more revealing outfit with her signature X doodled all over his body. Good for him!
Also, between this scene and the moment they show up in battle, they've apparently had the time to: - turn her entire lab/hideout into a blimp - cover the whole thing in giant tags of the firelights symbol, her cloud tatoos, and more - rebuild pow pow and fishbones, which were very much broken in act 2 - rally the firelights - cut and dye her hair - crop his top - pierce his ears - sew her a shark hoodie - cover her entire body in crayon drawings - accessorize their outfits - again, turn her lair, a giant airshaft, into a functional blimp
Maybe Ambessa gave her entire army the week off before battle. Maybe Jinx and Ekko were on unfathomable amounts of cocaine. We'll never know