- The protagonist getting with several people throughout the course of the book and still not finding "the one" by the end.
- Polygamy.
- Non-straight relationships.
- Relationships that are still building by the end of the story.
- Friends with benefits.
- Romantic asexuality.
- On-again off-again relationships (that repeat the on/off cycle more than once).
- Relationships for political purposes.
- Relationships that still have large flaws by the end of the story.
- Crushes that stay crushed (and not because the crush-ee turns out to be evil).
If you have any, feel free to list them down below!