Fred and George Weasley are often included in dating sim fanfiction as well. They are so full of mischief and charm that many fans enjoy writing about them in romantic relationships. Their relationships might involve a lot of pranks and fun - loving adventures with their partners.
Finn from Glee and Harry Potter himself could be paired in fanfiction. Finn has his leadership qualities in the Glee club, much like Harry has in the wizarding world. They could bond over their responsibilities and face challenges together, whether it's fighting off the Death Eaters or dealing with high - school - like rivalries in the case of Finn in the Glee world.
Obviously, Ladybug and Chat Noir are the most popular pairing. Their dynamic in the show, with Chat Noir's flirty nature and Ladybug's more reserved attitude, makes for a great basis for a romantic relationship in fanfiction. However, some fanfictions also pair Marinette with other characters like Luka. Their relationship in the show was quite sweet, and in fanfiction, it can be explored further in a dating context. There are also fanfictions that pair Adrien with other characters aside from Ladybug, although this is less common.
Harry Potter and Jake Long are often paired. Since they are the main characters of their respective series, it makes sense that fans would want to see how they interact. Their different personalities and powers make for an interesting dynamic.
Another popular pairing is Harry Potter himself with Chloe Price. Harry's bravery and Chloe's feisty nature could create some great storylines. Maybe Harry helps Chloe understand the value of life more, while Chloe teaches Harry to be a bit more rebellious in a good way.
Harry and Naruto are often paired as they are both the main protagonists in their stories and share the 'chosen one' archetype. Hermione and Sakura are also popularly paired, as they are both intelligent and strong female characters. Another common pairing is Ron and Choji, perhaps because they both have a bit of a comical side and are loyal friends. Also, Dumbledore and the Third Hokage could be paired in some fanfics, as they are both wise leaders in their worlds.
Leon is often a popular choice. His mysterious personality and good looks make him an interesting character to build a story around. Writers can explore his backstory more deeply and create new scenarios for the main character to interact with him.
Often, Harry Potter himself is paired with characters like Gwen from Total Drama. Their different personalities, with Harry's heroic and determined nature and Gwen's more alternative and cynical side, can create interesting dynamics.
Definitely Harry Potter and Daenerys Targaryen. Harry is the hero of his world and Daenerys is a powerful queen. Their meeting could lead to all sorts of interesting stories, like them sharing their experiences of leading and fighting for what they believe in.
Harry Potter himself is often paired with Madam Hooch in fanfiction. Given their connection through Quidditch and flying lessons, it's easy to see why writers would explore their relationship further. Maybe Harry has some trouble with a new flying technique and Madam Hooch spends extra time with him, leading to a deeper bond.
Harry Potter and Nate Ford could be a likely pair. Harry's experience with facing great evils and his leadership skills combined with Nate's strategic mind in planning heists would make for an interesting dynamic. They could learn from each other's methods of problem - solving.