Instead of risking a Google Drive download, I recommend these legal, affordable, and high-quality alternatives:
Unless Tere Liye or Gramedia has explicitly released the book for free, downloading a PDF from unauthorized sources is illegal under Indonesia’s Copyright Law (UU No. 28 Tahun 2014) and international agreements. Download Novel Janji Tere Liye Pdf Google Drive
Search for "Janji Tere Liye".