Giggles.
"He did the silliest thing she's ever seen, yet she couldn't get it out of her mind. Every time she saw that since the first time she saw him do it, her eyes would always magnify her smile. It always amused her when she saw him do that, and since, she'd bring it up in random conversations, knowing she'd end up giggling to herself with him smiling back at her. But somehow, a certain aspect of his persistence began to grow on her, even though they just met. It's something about his openness that drew her in, letting her know, maybe he's not someone to be afraid of. She could be openly awkward with him, only because she'd always find how awkward he'd be around her. And yet, all of it would always bring giggles to her evening. Perhaps it was a start of something she would've never dreamed of..."