Yes, there might be. Fanfics are often created by fans in various online communities. You can try searching on fanfic platforms like Archive of Our Own or Fanfiction.net.
A 'lethal weapon sex fanfic' is not a positive or acceptable form of fan - created content. Fanfiction is often a creative way to expand on a story or characters in a way that respects the original work. But when it involves sexual themes in relation to 'lethal weapon', it goes against the typical values associated with the action - packed, crime - solving nature of the franchise. It may also make many fans uncomfortable and can lead to a negative view of the fan community as a whole.
A more dramatic title could be 'Alejandro Cruz's Encounter with the OC: A Lethal Weapon Tale of Destiny'. It makes the story seem like their meeting was fated within the world of Lethal Weapon fanfiction.
You can try Archive of Our Own. It has a large collection of fanfics from various fandoms including 'Lethal Weapon'. Just use the search function and type in 'Alex Cruz Lethal Weapon Fanfic'.
Well, they could team up to solve a mystery. Maybe there's a crime wave in the city that the official Lethal Weapon characters can't handle alone, so Alejandro Cruz and the OC join forces. They might have different skills and personalities that complement each other, like the OC being really good at hacking and Alejandro Cruz having excellent combat skills.
First, platforms that host fanfics should enforce clear rules against adult and inappropriate content. They can use automated filters and also have human moderators to review submissions. Second, within the fan community itself, positive values should be promoted. Encourage fans to focus on creating and sharing fanfics that are in line with the original essence of the 'lethal weapon' series, such as action - based or character - development stories. This way, the inappropriate 'lethal weapon sex fanfic' will have less space to spread as the community as a whole rejects it.
To develop Alex Cruz's character in this fanfiction, you could focus on his backstory. Maybe explore his family life, his training, and how those things have shaped him. For example, if he had a tough upbringing, it could explain his sometimes brash behavior. As for the OC, give them unique traits. It could be something like they have a photographic memory which helps in solving cases.
Perhaps the OC has a secret past that is somehow connected to one of Cruz's old cases. When this connection is revealed, it creates a lot of tension between them. However, through communication and understanding, they are able to overcome this hurdle and their relationship evolves into something more. For example, the OC might have been involved in a crime as a victim and Cruz initially misjudges the situation.
I don't think I've heard of an episode specifically titled 'Family Guy Canadian Horror Story'. However, Family Guy often does episodes that involve travel and horror - like elements, so it's possible that it could be a fan - named or proposed episode idea rather than an official one.