The best place to find 'castiel x dean fanfiction' is definitely Archive of Our Own. It's a platform dedicated to fanfiction and has a huge amount of content for this pairing. You can also look for dedicated Supernatural fanfiction forums. There might be some hidden gems there. Some Reddit communities related to Supernatural might also have links or discussions about 'castiel x dean fanfiction'.
You can find 'castiel x dean fanfiction' on Archive of Our Own (AO3). It has a vast collection of fan - made stories related to this pairing. There are different tags and filters you can use to narrow down your search based on your preferences like genre, rating, etc. Another place is FanFiction.net, although AO3 generally has a more diverse and inclusive range of stories for this particular pairing.
You can start by looking on Archive of Our Own (AO3). It has a large collection of fanfiction, and you can easily search for 'Dean x Castiel' and'mpreg' to find relevant stories. Fanfiction.net is also a good option, although the interface might not be as user - friendly when it comes to searching for specific tags.
Fanfiction.net is another place to look for dean and castiel fanfiction. It has been around for a long time and has a large number of stories. However, the interface might be a bit more dated compared to AO3. You can search for their names in the search bar and browse through the results.
Archive of Our Own (AO3) is another great place. It has a very active Supernatural fandom community. Just type in 'alpha dean x omega castiel' in the search bar and you'll be presented with a variety of stories. The site also allows you to sort by different criteria like popularity, word count, etc.
Some Tumblr blogs are dedicated to sharing and recommending fanfictions. You could search for Supernatural fanfic blogs on Tumblr and then specifically look for Castiel x Dean yaoi ones. They might also provide reviews or summaries which can help you decide if the fanfic is worth reading.
Fanfiction.net might also be a good place. There are many different categories and tags there. Just type in 'animal Castiel x Dean' in the search bar, and it will show relevant stories if there are any. However, the quality may vary, so you might need to skim through a few to find the really good ones.
Some smaller, more niche fanfiction communities or forums dedicated to the Supernatural fandom might also have Castiel x Dean lemon fanfiction. For example, there could be Discord servers where fans discuss and share their works. But these might be a bit harder to find compared to the larger platforms. You could try searching for Supernatural fanfic communities on Reddit and asking for recommendations there.
There are fanfic - dedicated forums where users share their works. Check out some Supernatural - focused forums. Sometimes, Tumblr users cross - post their fanfics to these forums. Another option is to ask in Supernatural fan groups on social media platforms. They might be able to point you to some good dean x castiel tumblr fanfics.
You can find a lot of 'Supernatural Dean and Castiel fanfiction' on Archive of Our Own (AO3). It has a huge collection of fan - created works for various fandoms, including Supernatural. Just use the search function and type in 'Dean and Castiel' to get a bunch of results.
You can try searching on fanfiction websites like Archive of Our Own (AO3). There are a large number of Supernatural - related fanfictions there, and you're likely to find ones with Castiel and Dean having a kiss. Another option could be FanFiction.net, although the content and quality may vary more widely.
AO3 is the best bet. It has a very user - friendly interface and allows for easy searching. Just type in 'dean and castiel love' in the search bar and you'll get a whole bunch of results. Another option is Tumblr. There are many fanfiction writers who post their dean and castiel love stories on their blogs. You can search for relevant tags like #deanandcastiel or #destielfanfiction.