Before “Heartstopper” became a global phenomenon, it was a web comic, published online by the author, Alice Oseman, a few pages at a time.
Oseman, 28, began the webcomic in 2016 just after finishing college, and she was the creator, writer and an executive producer of the Netflix series.
The main story between Nick and Charlie remains largely unchanged, she said; much of the new material in the Netflix series came from expanding the supporting characters.
Rugby scenes were also tricky to film – in the book and on the show, Nick is a rugby player and Charlie joins the team.
While filming, she was part of an enormous team, and spent 11-hour days on location in Paris and at a school in Slough, England.