Maybe They Fault in our Stars’ by John Green if you like romance
Or the ‘GONE’ serie by Michael Grant if you prefer SF/dystopia.
Or ‘A Silent Voice’ by Yoshitoki Ōima if you prefer shojo manga.
I don’t know a lot of english/American books, because I read I lot of French books and I don’t know if they are translated in English.
Girl in pieces - Kathleen Glasgow
Every last word - Tamara Ireland Stone
This is where it ends - Marieke Nijkamp
What if it’s us - Adam Silvera and Becky Albertalli