One common theme is the enemies - to - lovers trope. Since they often bicker in the original show, many fanfictions explore how they can turn that into a romantic relationship.
Friendship is a very common theme. Most fanfictions explore the deep bond between Freddie and Sam, how they are always there for each other. Another common theme is adventure. They often go on different adventures together in the fanfictions.
One common theme could be the build - up of their relationship. It might show how they gradually fall in love before the kiss. Another could be the reaction of their friends or the surrounding characters to their kiss.
One common theme is the development of their relationship from friends to something more. Since in the show there were moments of tension between them, fanfiction often expands on that.
One common theme is the anticipation and excitement of starting a family. It could explore how Sam and Freddie deal with the news of the pregnancy, like their initial reactions.
Often, there are themes of career challenges while being married. Maybe Sam is pursuing her dream job while Freddie is also focused on his tech career, and they have to balance that with their married life. Also, rekindling their relationship or falling in love all over again within the context of marriage can be a theme. In some fanfictions, there might be external factors like jealousy from old friends or rivals that create drama in their married life.
One common theme is the build - up of their relationship. It often shows how they've been secretly attracted to each other for a long time and how the kiss is the culmination of all those unspoken feelings.
A common theme is career growth. Many fanfictions explore Freddie's journey in the acting world, his auditions, and how he overcomes obstacles to land great roles.
Another plotline could involve some kind of misunderstanding or obstacle. Like, Sam might overhear Freddie saying something that she misinterprets as him not being interested in her. This could lead to a rift between them for a while. But then, through a series of events, they finally clear up the misunderstanding. It could be that their friends play a role in getting them to talk it out.
Fanfiction about Sam and Freddie from iCarly often explores their relationship in different ways. Some might focus on their chemistry that was hinted at in the show. It could be about how they might get together in an alternate universe or how their relationship could develop over time.
Maybe they love the creativity in fanfiction. It allows them to see different interpretations of themselves and their world.