Fanfiction.net might also be a good place to look. However, the content there can be a bit more hit - or - miss. You'll need to dig through different categories and tags related to the Harry Potter fandom and specifically look for works that involve crossdressing themes with Harry and Lucius.
One popular theme is the exploration of identity. Harry, when crossdressing, might discover new aspects of himself or challenge the traditional gender roles within the wizarding world. For Lucius, it could be about breaking his own haughty and somewhat rigid image.
Yes, there might be such fanfics in the vast world of fanfiction. Some fans like to create alternate universes where unexpected family relationships are explored. However, it's important to note that these are not part of the official canon.
The theme of unexpected alliances is also quite common. Since Lucius and Harry are from different sides in the original story, fanfics often play with the idea of them forming an alliance that no one expected. This could be due to a common enemy or a shared goal that forces them to put aside their differences.
I'm not sure specifically about a 'Lucius cheats on Harry' fanfic. Fanfic topics can be quite diverse, but this seems like a rather unusual and perhaps not very common plot. You might try searching on some large fanfic websites like Archive of Our Own, but it could be hard to find.
I'm not entirely sure specifically as I haven't read this particular fanfic. But generally, in a fanfic with Harry and Lucius, it could be about a unique relationship or adventure they embark on within the context of the Harry Potter universe's fan - created stories.
Many Harry Lucius fanfics play with the themes of redemption. Lucius, who is often seen as a villain in the original, can have a journey of self - discovery and change through his interactions with Harry. This adds depth to both characters and makes for an interesting read. For example, in some fanfics, Lucius starts to question his pure - blood ideology because of Harry's influence.
A third theme is the element of disguise and secrecy. Crossdressing can be used as a form of disguise, much like the invisibility cloak in the original story. Fanfics often explore how Harry uses this new form of 'disguise' to his advantage, whether it's to outwit enemies or to gain access to places he otherwise couldn't.
Yes, there are. Some fanfics might depict them in a more antagonistic relationship where they are constantly at odds with each other due to their different stances in the wizarding world. For example, Lucius being a Death Eater and Harry being the 'Chosen One' to oppose Voldemort. Others may explore a scenario where they have to cooperate for a common good, which can be quite interesting to read.
I'm not sure if there is such a specific fanfic. Fanfic creation is very diverse, but this seems like a rather unusual and perhaps not very common combination. There are many fanfic platforms out there, but this concept might be a bit out of the mainstream.