The Naughty Librarian and the Novice Author

Your partner, dressed as a steadfast and stern representative from the Library of Congress, has found what she believes to be errors in your book. You, as the novice author, feel compelled to defend your work. The stage is set for a passionate duel of wits and wills.
Indignant and determined to prove herself right, your partner pores over the text, pointing out misplaced commas and misplaced quotes. You stand your ground, citing your impeccable research and peer reviews. Drawn together in your shared passion for literature, an undercurrent of attraction sparks and intensifies between you.
Gradually the debate subsides and the roles shift: the inexperienced author and the authoritative librarian transform into two people getting lost in a world of their own. Every accusation turns into a flirt, every mistake becomes a playful tease, and every protest is sprinkled with increasingly sexual overtones.

Firstly, set the scene by arranging your living room or home study to look like a traditional library setting. Have a couple of bookshelves stocked with books, a table for studying, and perhaps an old-fashioned desk lamp for the perfect ambiance.
Dress up according to the roles. Your partner can don a 'Sexy adult librarian' outfit - complete with glasses and a strict expression, while you wear something casual but still professional, like a 'Sexy adult novelist' ensemble.
Then, grab a copy of your favorite book, or perhaps even your own pieces of writing. This will serve as the disputed literary masterpiece for the night.

Keep it playful and easy. The fun in this scenario lies in the power dynamic between knowledge and naivety.
Remember to stay in character. The heated discussion over literary formats is meant to fuel your interaction and keep the plot going.
Flirtatious banter is key in this scenario. Enjoy teasing each other with your literary knowledge and slowly let the professional argument turn into passionate exchange.