One common theme is redemption. Many fanfics explore whether Ruby could be redeemed through her relationship with Sam. Another theme is power and its corrupting influence, as Ruby was a demon and Sam had his own power struggles.
Love and lust is also a theme in some fanfictions. Their relationship was complex in the show and fanfic writers often play with the idea of whether there was a deeper emotional or physical connection between them. And there's the theme of trust, as Sam had to decide how much he could trust Ruby who was a demon after all.
The theme of sacrifice is also quite common. Since both characters were in dangerous situations in the Supernatural world, fanfics often explore the idea of one sacrificing for the other. For example, Ruby sacrificing her demonic nature for Sam or Sam sacrificing his own well - being for Ruby's sake. This adds a layer of depth to their relationship in the fan - created stories.
One common theme is the struggle for acceptance. Sam might struggle to accept the situation himself, and his friends may have a hard time accepting it too. Another theme could be protection. Sam would likely feel the need to protect Ruby and the unborn child in a world full of danger. And there's also the theme of change, as this situation would drastically change the lives of both Sam and Ruby.
I really liked 'Ruby's Redemption in Sam's Eyes'. In this fanfic, it takes a different turn where Ruby seems to be on a path of redemption through her connection with Sam. It shows a more vulnerable side of Ruby that we don't often see in the show. It's a great read if you like exploring the emotional side of their relationship. And there's also 'Sam and Ruby: The Hidden Bond' which uncovers a hidden, deeper bond between them that even they are not fully aware of at first.
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.
One common theme is Sam's struggle with his health. The seizures can be a symbol of his vulnerability in a world full of supernatural threats. Another theme could be the brothers' relationship. Dean's reaction to Sam's seizures and how he tries to protect and care for his brother. Also, there might be themes related to Sam's inner strength as he copes with this new condition while still being involved in hunting supernatural creatures.
One common theme is Sam's struggle with his identity. Being a young hunter in a world full of the supernatural, he's constantly trying to figure out who he is and what his place is. For example, in many fanfics, he battles between his normal self and the part of him that has to be a hunter.