So you’ve had a lovely evening, and they invite you back to their place, and then one of these telltale signs pops up. RUN.

No books in sight.

Maybe they have a very demanding job that doesn't leave time for reading, or maybe they prefer to swill Jäger in their spare time instead of embarking on a journey through the hearts and minds of others, or maybe they migrated all their reading material to a Kindle and burned their physical books in a fire. Whatever the reason, they're a serial killer, get out.

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