Because you like Sally Albright in When Harry Met Sally...
Edmund Pevensie isn't a bad person, but he did sell his siblings out for a tin of Turkish Delight. See them in The Chronicles of Narnia.
Jessica Davis is the girl that guys like to like. See them in Thirteen Reasons Why .
John Watson is haunted by his past (who isn't) but he's starting to branch out with some help from a world class detective. See them in Sherlock.
With an abundant supply of alcohol, nice restaurants, and free will, Crowley is a demon who is thoroughly enjoying his time on Earth. See them in Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch.
Joe Goldberg works at a local bookstore and charms most girls sock's off. He is also a serial killer, but no one is perfect! See them in You.
The crown prince of the Fire Nation, Zuko has been ordered by his father to find the long-lost Avatar before he is allowed to return home. See them in Avatar: The Last Airbender.
Harrison Wells is a brilliant scientist full of secrets. See them in DC Extended Universe.
Elio Perlman likes the piano, peaches, and his father's new research assistant a little too much. See them in Call Me by Your Name.
Skye is a pluck hacktivist who tries to use her power for good. Unfortunately, " good" isn't always so clear-cut. See them in Marvel Cinematic Universe.
Yuki Cross is a cheerful, funny, bold young woman with hidden insecurities. See them in Vampire Knight.
Miles Morales was bitten by a radioactive spider, put on the webbed spandex, and beat up his first bad guy before his voice changed. See them in Marvel Cinematic Universe.