One common theme is their unique relationship dynamic. Since Gabriel is an archangel and Sam is a hunter, there's often a play between power and vulnerability. Another theme is the idea of redemption for Gabriel through his interactions with Sam.
Family and relationship dynamics are also big themes. How the other characters in Supernatural, such as Sam and Dean, react to Gabriel's situation. It could be a mix of shock, support, or even some initial disbelief. And of course, there could be the relationship with the other parent (if there is one in the fanfic) which can range from a loving partner to a more complicated situation.
Another theme is the exploration of different realms. As Gabriel has the ability to travel between realms, fanfictions often take the soulmate on adventures through different planes of existence. This allows for some really creative and exciting storylines, with the couple facing various challenges in different supernatural settings.
One common theme is Sam's brothers taking care of him. Dean, in particular, is usually very protective when Sam is sick. Another theme could be Sam's struggle with whatever is making him sick, whether it's a supernatural illness or just a regular human ailment but in a world full of the supernatural.
It depends on your personal taste. If you like the dynamic between Gabriel and Sam in the Supernatural series, then it could be really good. It might explore their relationship in new and interesting ways through text exchanges.
One common theme is the unrequited love. Often Becky has strong feelings for Sam, but Sam may be oblivious or hesitant. Another theme is Becky trying to fit into Sam's world of hunting and the supernatural. Also, there can be themes of redemption for Becky, as she has made some not - so - great choices in the show, and fanfiction can explore her journey to becoming a better person in relation to Sam.
One common theme is trauma and recovery. Since Sam has been abused, these fanfictions often explore how he copes with the emotional and psychological scars. Another theme is family dynamics. How Dean and other family members react to Sam's situation and how they support or sometimes fail to support him.
Another theme is acceptance. This includes both self - acceptance and acceptance from others like Dean or other hunters. It can be a struggle as the Supernatural world might not be as open - minded as we'd like. In some fanfictions, this is a major plot point where Sam has to fight for his relationship to be recognized.
Loneliness can be a theme too. After being betrayed, Sam might isolate himself, feeling that he can't trust anyone anymore. This can lead to him making some rash decisions. And the theme of revenge also pops up sometimes. Sam may seek to get back at those who betrayed him, which can take the story in a whole new direction.
One common theme is the exploration of power. Since Chuck is a powerful being in the Supernatural series, fanfictions often deal with how Sam interacts with Chuck's power and what it means for their relationship.
The theme of self - discovery is also quite prevalent. As they go through various adventures, Sam and Jack learn more about themselves, their powers, and their place in the world. And family is another important theme. Even though they may not be related by blood, they become like family in many of these stories.