I'm very surprised to see it on the list.

It's a mediocre teen-fiction, that starts off strong, but completely loses itself into an endless list of standard story tropes by the end. (trying not to spoiler, here)

It's only still popular now because the film has just left cinemas.

Yep, surprised at this. I think even if you enjoy it on some level you have to acknowledge that it is a thin spread of nostalgia on a slice of very weak plot and characterisation, with no real heart to speak of.