One great site is ManyBooks. It has a large collection of e - books, including romantic novels, and they are all free to download. You can search by genre and find exactly what you're looking for.
Such sites often contain inappropriate and potentially illegal content. It's best to stay away from them to avoid legal issues and maintain a healthy online environment.
One common theme could be the exploration of their relationship dynamics. It might involve how they interact, whether it's in a friendly way or with some underlying tension.
For a great manga reading experience, you could try Viz Media or Comixology. They have licensed content and reliable servers. But remember, always respect copyright and choose legal platforms.