Disclaimer: I do not own any of the work of Joanne Kathleen Rowling, or that of Ed Sheeran, Taylor Swift or Westlife.
Rose Weasley wasn't the type to pay much attention to boys. She loved the guys in her family, and had friendly conversations with the boys she encountered in classes and such, but she was not the type to fantasise endlessly about hot guys in her school. Not that she wasn't capable of it, but rather, she saw other things in her life as more important. Rose Weasley wasn't uptight or snobby though. If anything, she was a pleasant person, sometimes a little crazy when she was with friends, but a model student with perfect grades otherwise. She could get into trouble for talking too much, but everyone knew her as a chatty person anyway. She was the type of person to randomly start singing (and rather well, at that) in the middle of the hallways just to please her friends, regardless of how many times Filch would scream at her to shut up. Or she would befriend each new generation of house elves and become such firm friends that she would bake cookies at 2am with them, and then sneak extra cookies to her housemates. Rose Weasley was not especially pretty or 'hot', but she was cute and small-something people regarded quite weird as her mother Hermione was of a decent height, and her father Ron was always known for being 'gangly'. Rose Weasley was the person who everyone knew and loved, not because of her parents or lineage, but because of whom she was and how she treated people.
Scorpius Malfoy was surprisingly similar to Rose Weasley. Granted, he wouldn't bake cookies at 2am or burst out singing randomly, but like Rose, he was a model student and got perfect grades. He was liked by most Gryffindors, as he was the one to break Malfoy tradition; he was liked by Ravenclaws and Hufflepuffs, and even some Slytherins, even though at first he had been regarded as a traitor. Scorpius Malfoy even liked muggle music, just as Rose Weasley did, although that of course was courtesy of their Muggle born mothers. He was a fan of Westlife, (he loved the sound of 90's pop), rock music, and even Taylor Swift (although arguably he liked her looks more than her sound). Rose Weasley liked the same, and most notably, Ed Sheeran, who her mother thought resembled her father Ron a lot. Even the muggles would mistake her father as Ed Sheeran, although that was the result of a video of Ron miming the words to 'Lego House' somehow being released onto the internet. Scorpius Malfoy took after his father in looks but had the misfortune of being blessed with violent freckles from his mother, which made him look less handsome than he actually was. Nonetheless, Scorpius Malfoy was a decent person too.
The two did not know each other that well. Both had disregarded their parents' statements of beating the other and instead focused on their own lives- they saw no need to fight. They both knew Albus, of course, and sometimes had conversations while Albus was being an idiot and wasn't paying attention to them, but they were in no way best friends, or even close to that. They simply had a conversation every now and then, like someone does when their best friend isn't around and they have to talk to another person whom they don't know very well.
But then a seemingly unimportant incident at the end of 5th year drew their lives together and over the next few years, the two found themselves in the midst of a whirlwind of events.