I get way too excited about tracking down pairings I love, so here’s the long, nerdy route I take when I want 'Venom x Spider-Man' fic. Archive of Our Own (AO3) is my top stop: it's easy to search for a pairing tag like 'Venom/Spider-Man' or 'Venom x Spider-Man', and you can filter by language, rating (Mature, Explicit), and sort by hits, kudos, or date. I usually sort by kudos and check the tags for warnings—things like 'smut', 'hurt/comfort', or 'dark themes' matter a lot with symbiote stories. AO3 also lets you bookmark and subscribe to authors and series, which saves me from rediscovering the same fic later.
FanFiction.net and Wattpad come next. FanFiction.net has a massive archive if you don’t mind older formats and less flexible tagging; sometimes the pairing is buried under alternate titles, so try searching both character names and common nicknames. Wattpad skews younger and has serialized, chatty fics; it's great if you like an ongoing story with comments after each chapter. Tumblr and smaller blogs still host gems—search the pairing tag and follow chains of reblogs. Reddit communities and Discord servers can point you to rec lists and one-shot collections if you prefer curated picks.
If you want a targeted Google search, use site-specific queries like: site:archiveofourown.org "Venom x Spider-Man" or "Venom/Spider-Man". Always pay attention to content warnings and age ratings—symbiote fics can get intense, and some writers include non-consensual or violent scenes. I save authors I like, leave kudos or a short comment when I enjoy something, and use bookmarks so I don’t lose a perfect late-night read. Happy hunting—there’s a surprising variety out there depending on whether you want fluff, angst, or dark, gritty vibes.