Spoilers for the end of the series.
Gino was quite possibly the most infuriating person Kallen had ever met. And this was even with having known Tamaki your entire life.
He was self centered, spoiled, and annoyingly happy. He was always laughing, always hanging off people, and, technically, the two were sworn enemies.
So why was it that every time she met his eyes, she got the same pleasant sinking feeling as the one she'd gotten whenever Lelouch would praise her?
"You like him." Milly had said, betraying a certain knowledge in her smile when she'd come to visit Ashford. "Even though you shouldn't right?"
Kallen remembered, of course, waking up after the last battle with Suzaku, before Lelouch had ordered them all captured. The cockpit of the Guren was open, and she'd looked up, almost immediately, to find Gino and a few others at the opening. He had helped her out of the cockpit, helping to steady her while she found out the news of the battle. His hands, warm and large, rested comfortingly on her shoulders, but at the time she had been too preoccupied to notice.
Gino was surprisingly sharp about things. After Lelouch's death, he had left her mostly alone. But, the minute she felt a bit better, he had been right back to his old, annoying ways.
It was kind of a pro and con thing, at this point.