One more theme could be the exploration of trust. Since they come from such different worlds, trust is a huge factor. In these fanfictions, the act of making love can be seen as a culmination of the trust they've built. It can also show how their trust in each other is tested and strengthened through their relationship, not just in the physical sense but also in how they handle the secrets and differences between them.
In these fanfictions, a prevalent theme is the power of love. Their act of making love is a manifestation of the strong love that has been building between them. Another theme is the discovery of sensuality in a human context. Since they are in a human - like situation in the fanfictions, they explore their sensuality in a new way. Additionally, the theme of commitment often runs through these stories. Making love is seen as a step towards a deeper commitment in their relationship, not just a physical act but a sign of their long - term devotion to each other.
One common theme is the exploration of their deep emotional bond. Since their relationship in the original story is so intense, fanfics often expand on how that translates into a physical relationship. Another theme could be the consequences, like how it affects their relationship with other characters.
Often, there are themes related to self - discovery. For example, how Bella might discover new aspects of herself through her relationship with Alec. And also, themes of loyalty and betrayal can play a part. Maybe they have to deal with friends or family who don't approve of their relationship, which tests their loyalty to each other.
One common theme is the exploration of their new vampire sensuality. Since they are vampires, their physical experiences are different, and this is often explored in fanfiction. Another theme could be the eternal nature of their love. Now that they are vampires, they have eternity to be together, and this is a big aspect of how their relationship is depicted. Also, the idea of their love being a powerful force that can overcome any vampire - related difficulties is quite common.
Well, often there are themes of power dynamics. For example, who has the control in a relationship might be explored through the sex scenes. Another could be the exploration of taboos.
One common theme could be Bella's self - discovery. After being cheated on, she may start to explore her own identity outside of her relationship with Edward. Another theme could be friendship. Her friends might play a bigger role in helping her through the tough time.
One common theme is the exploration of new powers. Since they are witches, they get to discover and master different magical abilities.
Family honor is another theme. The forced marriage might be a way to uphold or restore family honor. But the novels also show how this concept can be misused and how it affects the individuals involved. It's not just about the couple getting married, but the whole family's reputation in society.
In vampire sex novels, aside from the sexual aspect, there can be themes of isolation. Vampires are usually solitary creatures, and when they engage in sexual relationships, it can be a way to break that isolation. Additionally, there may be themes of loyalty and betrayal. If a vampire has a sexual relationship with a human, there may be issues of whether they will be loyal or betray the human, especially when it comes to their vampire nature and the need for blood.
The theme of loyalty also often comes up. In Twilight, there is loyalty among the Cullens, and between Bella and her friends. In fanfics, this loyalty can be tested in various situations. Maybe a character has to choose between loyalty to their vampire family and helping a human friend in a difficult situation. These themes can be found in many Twilight fanfics even when we move away from inappropriate 'lustful thoughts'.