I'm not sure exactly which 'Lost Girl' fanfiction specifically focuses on Dyson getting married. There could be many different takes in the fan community. One possibility could be that in some fanfics, Dyson might marry a character from the show in an alternate universe where the rules of the Fae world are different, allowing him to fully commit to a relationship in a more traditional human - like way.
Well, regarding fanfiction about Dyson getting married in 'Lost Girl', it really depends on the creativity of the fans. Some fanfictions might explore a scenario where Dyson marries Bo. This could involve a lot of emotional drama, as they have a very complex relationship in the original show. There would be challenges they'd have to face, like dealing with the politics of the Fae world and their own personal differences. Maybe in this fan - created marriage, they find a way to balance their powers and emotions in a way that wasn't fully explored in the show.