I've built up a little mental map of where to go when I want legitimately free, adult-themed fiction, and I like to mix classics, fan works, and user-submitted stories.
For older, public-domain erotica and risqué classics you'll often find complete texts on Project
gutenberg and the Internet Archive — things that entered the public domain in many countries, including works like '
lady chatterley's lover' in places where it's public domain and other historical pieces. For contemporary, user-created erotic stories, Literotica and Lush Stories are big hubs with searchable categories and ratings. Archive of Our Own (
AO3) is fantastic for fanfiction and original works tagged for explicit content; the tagging system there is excellent for avoiding triggers you don’t want.
smashwords and ManyBooks sometimes have indie authors offering free erotica or adult romance under permissive downloads, and Wattpad hosts mature stories too, though quality varies.
I also use my local library apps — OverDrive/
Libby and Hoopla often carry adult romance and erotica that you can borrow legally with a library card. Quick tip: always check age restrictions and site rules, and watch for clear content warnings. I enjoy browsing a mix of these sources depending on my mood — sometimes a cheeky short on Literotica, sometimes a public-domain classic on the Archive — and it keeps my late-night reading delightfully varied.