I'm not sure about specifically good ones. Fanfiction in such a niche and often inappropriate combination might be hard to find in mainstream platforms due to its rather odd and potentially violating nature of normal ethical and content guidelines.
One possible plot could be a story of a human who discovers a stranded xenomorph and, against all odds, forms an emotional bond with it that develops into a romantic relationship. They might face challenges from their respective species, like the human facing rejection from his own kind for loving an alien.
There may not be mainstream well - known ones in the general sense. However, within certain niche fanfiction communities, there could be some popular works. But they are often not widely publicized due to the rather unusual and specific nature of the pairing.
Xenomorph x Human Female fanfiction might also focus on the power dynamics between the two. The Xenomorph is typically a very powerful and feared creature, while the human female may be seen as more vulnerable in a traditional sense. But in these stories, she could potentially find ways to hold her own or even gain an upper hand through her intelligence or unique connection with the Xenomorph.
It could start with fear and curiosity. The human is initially terrified of the xenomorph but as they observe it, they notice some unique behaviors. This piques their curiosity and they start to approach it cautiously.
Xenomorph x human fanfic often explores unique and sometimes disturbing relationships. It might involve the contrast between the alien nature of the Xenomorph and the human characteristics. For example, some fanfics could focus on how a human might interact with a Xenomorph in a post - apocalyptic setting where they are forced to coexist. This could range from trying to understand the Xenomorph's behavior to forming an unlikely alliance.
The concept seems highly inappropriate. The xenomorph is not a typical character for romantic or sexual relationships with humans in the first place. And when adding the 'gay' and 'lemon' aspects, it goes against the general moral and ethical boundaries of most fanfiction. Fanfiction usually focuses on more relatable and acceptable relationships based on the original works, rather than this kind of out - there and often offensive combination.
I'm not really into that specific type of fanfiction, but you can try searching on some dedicated fanfiction websites like Archive of Our Own. There might be some 'human x xenomorph' stories, though I'm not sure about the 'lemon' aspect as it might involve adult - like content which is not always easy to find or appropriate.
Yes, there may be some fanfiction exploring this relationship. The idea of such an inter - species relationship can be quite fascinating to some writers. They might explore themes like how two such different beings could find common ground or form an emotional bond. It could involve a lot of creativity in terms of character development and world - building. You can search on fanfic sites like Archive of Our Own or FanFiction.net to see if there are any works in this genre.
One challenge is the extreme difference in biology. Xenomorphs have a very alien physiology which is hard to reconcile with human concepts of love. Also, their violent and predatory nature in the original lore makes it difficult to create a believable love story.