There's also 'Unexpected Encounter'. In this fanfiction, the kiss between Finn and Rachel happens in a rather unexpected situation. It's a short but sweet read, and the way their emotions are conveyed during the kiss is really touching. It shows how their relationship can be so full of surprises.
There might be such a fanfiction. In some cases, the author may write Finn to cheat on Rachel because he's feeling neglected in their relationship. He could feel like Rachel is so focused on her Broadway dreams that she's not paying enough attention to him. So, as a desperate attempt to get some sort of emotional fulfillment, he cheats. But this is just one possible interpretation in the world of fan - created stories.
Archive of Our Own (AO3) is also a great place. It has a well - organized tagging system. Look for the Glee fandom tag first, and then narrow it down with 'Rachel and Finn' and'married' tags. You'll be able to find some really interesting and well - written fanfictions there.
One common theme is guilt. Finn usually feels guilty about his actions, which can lead to a lot of internal conflict. Another theme is forgiveness. Whether Rachel forgives Finn or not can be a big part of the story. Also, the theme of trust being broken is often explored.
You can try Archive of Our Own (AO3). It has a large collection of fanfictions, including many about Finn and Rachel's kiss. Just use the search function and type in relevant keywords like 'Finn and Rachel kiss' and you'll get a bunch of results.
In fanfiction, it could be due to misunderstandings. Maybe Finn misinterprets Rachel's friendship with another male character in the Glee club as something more. This jealousy and lack of communication could cause their break - up.
In this fanfiction, they might have a beautiful wedding ceremony filled with all their friends from Glee club. There could be amazing musical performances during the wedding. Rachel might wear a stunning white dress and Finn could be in a sharp suit. Their love for each other would be the center of the story, and they would start their new life together full of hopes and dreams.
This type of fanfiction is quite heavy. It could depict Rachel's downward spiral leading to her suicide, perhaps due to the overwhelming grief of Finn's death. The writers of such fanfictions might focus on how the other members of the Glee club try to hold on to their own sanity while also dealing with the loss of two important people. It can be a very emotional read, full of heartbreak and a sense of hopelessness at times.
Their relationship would likely become deeper and more stable. They would be more committed to each other. For example, they would support each other's career choices without hesitation. Finn would be there for Rachel's auditions and she would encourage Finn in his own pursuits.
Mr. Schuester could be disappointed. He always saw Finn and Rachel as a power couple in the Glee club, their relationship inspiring others. He might try to mediate between them at first, but if that fails, he would hope they could both still contribute positively to the club despite the break - up.