One common theme is redemption. Often, either Jeff or Jane has some past mistakes or traumas, and through their relationship, they find a way to redeem themselves. Another theme is self - discovery. As they get closer, they learn more about themselves.
Love and friendship are common themes. The relationship between Jane and Jeff might be explored in terms of how they grow closer as friends or develop romantic feelings for each other.
Love and romance are also quite common. Writers may depict how Jeff and Jane fall in love, with all the sweet and sometimes angsty moments that come with it. There could also be themes related to self - discovery, where through their relationship with each other, they learn more about themselves.
Love - hate relationship is also very common. They are enemies by nature but in some fanfics, there's an underlying attraction or connection that they can't deny. This creates a lot of drama and tension in the stories.
The theme of trust is quite common. Since they might come from different backgrounds or have had different experiences, building trust is crucial in their relationship in these fanfictions. Additionally, the theme of sacrifice often appears. They might have to sacrifice something for the sake of the other or for their relationship to survive. For instance, one might sacrifice a personal ambition to be with the other.
One common theme is the battle between good and evil within their relationship. Since Jeff is a killer and Jane is often portrayed as more of an anti - hero or hero figure, their interactions can be seen as a struggle between these two forces.
One common theme is revenge. Since Jane has a vendetta against Jeff in the Creepypasta lore, a lot of fanfictions revolve around her attempts to get back at him. Another theme is the struggle between good and evil, as Jane is often seen as a more 'righteous' figure compared to the chaotic and evil Jeff.
One common theme is redemption. Given their dark and violent pasts, many fanfictions explore the idea of either Jeff or Jane seeking redemption through their relationship. Another theme is the power of love to change, as they are two very damaged individuals and love might be the thing that can transform them.
One common theme is the struggle between good and evil. Jane is often portrayed as more of the 'good' side trying to stop Jeff who is seen as the 'evil' one. So there's a constant battle of morals.
One common theme is the struggle for power. Given that both Slenderman and Jeff are powerful in their own ways, the fanfic may focus on who will dominate in their relationship. Another theme could be madness. Jeff is often associated with a deranged state of mind, and when combined with Slenderman's enigma, it can create a sense of chaotic madness throughout the story.
Often, there is a theme of mystery and danger. Jeff's nature brings an element of unpredictability. So in these fanfics, the reader might be drawn into his world of mystery and have to navigate the dangerous situations that come with being close to him. Adventure is also a common theme as the two characters might go through various challenges together.