You can try Archive of Our Own (AO3). It has a large collection of fanfics, including many 'hotch x reid' ones. Just use the search function and type in the relevant tags.
One great 'hotch x reid fanfic' is 'The Unspoken Bond'. It delves deep into their relationship, exploring how their different personalities complement each other within the BAU. Another interesting one is 'A Different Perspective' which shows their interactions from the eyes of a new team member. And 'Hidden Feelings' is also quite popular as it slowly unfolds the underlying emotions between Hotch and Reid.
One common theme is the professional relationship. They often work together on cases, and fanfictions might explore how they respect each other's skills. Another theme could be friendship. Reid might look up to Hotch as a mentor, and Hotch might see Reid as a valuable member of the team.
The relationship between Reid and Hotch is complex in the show. In fanfic, it can be explored in new ways. The 'lemon' aspect might add an element of spice and a different take on their relationship, like exploring their hidden emotions and desires.
One great fanfic is 'The Bond Between Them'. It beautifully explores the relationship between Hotch and Reid. It shows how their different personalities complement each other in solving cases. Another good one is 'Unspoken Understanding' which delves deep into their unspoken connection during high - pressure investigations.
There's also the 'opposites attract' trope. Hotch is more stoic and reserved, while Reid is brilliant but a bit socially awkward. Their differences make for an interesting dynamic in fanfictions, and writers often explore how they complement each other in different ways.
There are many fanfic communities out there. While I can't point you to a particular Reid and Hotch lemon fanfic, you could join relevant fan groups on social media platforms. Fans often share their favorite fics in those groups. Just make sure to respect the rules of the group and the authors of the fics.
One common theme is the professional respect they have for each other evolving into a more personal connection. Since they work closely in the show, fanfictions often build on that dynamic. Another theme is how they support each other during difficult cases. For example, Hotch might be there for Reid when he's struggling with a particularly disturbing case.
You can try fanfiction websites like Archive of Our Own (AO3). There are a large number of fanfictions about Hotch and Reid on it. Just search for 'Hotch x Reid' in the search bar, and you'll get a list of relevant works.
There are some fan - made communities on social media platforms like Tumblr. They often share and recommend Reid x Hotch fanfictions. These fanfictions can range from ones that are set in the canon universe of the show, following the original storylines closely, to ones that are more of an alternate universe, where the characters might have different occupations or relationships but still retain their core personalities.