When writing a gay disco fanfic, use vivid descriptions. Describe the disco itself, with its flashing lights, mirrored balls, and sweaty dance floor. This will draw the reader in. Develop the relationship between the gay characters gradually. Start with glances across the dance floor, then shared dances, and finally deep conversations. Make it believable and engaging.
First, do research on the disco era. Know about the music, the fashion, and the general atmosphere. For example, mention popular disco songs like 'Stayin' Alive' to set the mood. Then, create interesting characters. Make them unique and give them distinct personalities. For instance, one could be a shy dancer and the other a confident disco regular.
To write a great gay disco fanfic, focus on the emotions of the characters. Show how the disco environment affects their relationship. Maybe the loud music and crowded dance floor make them feel more alive and bold in expressing their love. Also, add some conflict. It could be something like family not accepting their relationship or jealousy within their group of friends.