All 5 books in the Heartstopper series,
by Alice Oseman
 
Heartstopper is an ongoing LGBTQ+ young adult graphic novel and webcomic series written and illustrated by British author Alice Oseman. It follows the lives of Nick Nelson and Charlie Spring as they meet and fall in love.
 
The series was later adapted into the Netflix television series of the same name also written by Oseman and starring Kit Connor and Joe Locke as Nick and Charlie, respectively.