Rose Hermione Weasley was big on wishing. She'd wish on anything and everything. Her mother didn't approve, of course. Hermione approved of few of the airy, silly things her daughter did, but Rosie did most of them anyway. She'd dance in the rain and sing on stage and wish. She'd always wish.
She was five years old when she learned how to wish. Teddy was babysitting her and her little brother. At this point, she held a great dislike for little Hugo, and had escaped to the back garden while Teddy tried to get him to sleep. She was curled up in a lawn chair, attempting as only five year olds do to count all the stars, when Teddy found her.
"Hey, Ro-Ro," he called softly as he slipped into the yard. "How are you?"
"Why aren't you with Hugo?" she demanded witheringly.
Teddy chuckled. "He's asleep, Rosie." He plopped down into a lawn chair next to her. "You don't like him much, do you?"
"He's boring and ugly and stinky," declared Rosie. "And Mummy and Daddy love him more."
Teddy chuckled. "No, they don't," he comforted the little girl. "And he's only boring and ugly and stinky now. Soon, he'll grow up and you'll be able to boss him around."
Rosie opened her mouth to answer, but before she could, Teddy was cutting in. "Look Ro, hurry, a shooting star!"
"Ohhhhhhhhhhhh!" The two followed its track across the sky for an entirety of five seconds.
"Did you make a wish?" Teddy wanted to know.
Rose scrunched up her face. "No, am I s'posed too?"
"Make a wish on a shooting star, and it'll come true," quoted the thirteen year old boy. "Same for 11:11, 12:34, birthday candles, first star you see, and your first love."
"Daddy told me 'bout those things," said Rosie thoughtfully, "but not the love one. Ew, cooties."
"My Grandma Meda made it up," explained Teddy. "So make a wish, Ro!"
Rosie scrunched up her face. "Um, um, I wish Hugo wasn't smelly and boring and I wish I had my own pony and I wish Teddy could sit for me every night!" She grinned at him. Her top tooth was missing.
Teddy laughed, messing up her red hair. "Thanks, but you still don't get extra ice cream, Rosie."
But Rosie never forgot that night, and after that, she wished on everything, all the time – eleven eleven, one two three four, birthday candles, and the first star you see.
And, although she didn't know why at the time, the first time she saw Scorpius Malfoy, she made a secret wish.
In all honesty, from that perspective she should've expected it when he asked her out three years later.