We lined them up: every Ali Hazelwood book in order of publication, shoulder to shoulder, like a string of lab experiments gone deliciously off-script.

First came the rom-coms in lab coats, where equations somehow translated into blushes and giggles. Then came the novellas, quick and messy like a caffeine shot between lectures. And lately? Vampires stalking through the syllabus, because apparently the scientific method now includes bloodlust.
This article does the thing: every title Ali’s published, in exact order of release, plus the fresh arrivals circling on the horizon. For each one, the tropes are laid bare: slow burns that last a geological era, paranormal enemies-to-lovers, heroines who outwit the universe with math, sarcasm, or both. The whole bibliography, catalogued and buzzing, ready for your next TBR experiment.
Quick Answers Before You Dive In
Do you have to read Ali Hazelwood books in order?
No, each book stands on its own. Reading them in publication order is fun (you can watch her go from labs to vampires), but it’s not required homework.
What’s the spiciest Ali Hazelwood book? And the least spicy?
Deep End and Not in Love are at the top of the spice scale with more heat and more open-door scenes. Check & Mate (her YA chess romance) plays it very low on the steam but still heavy on the tension.
Which Ali Hazelwood book should I start with?
The Love Hypothesis is the classic gateway: STEM chaos, fake-dating, maximum giggles.
Now here’s the full lineup, in order of release. No spoilers, absolutely no plot breakdowns, not even the guy’s name. I’ll give you just the heroines in all their chaotic glory, plus a quick take on vibes and spice levels.
The Love Hypothesis (September 2021)
Themes: STEM, academia; Tropes: fake dating, grumpy/sunshine, slow burn
Olive Smith spends more time with her lab bench than with other humans, and the book treats that as both tragedy and punchline. She’s stubborn, funny in the way only stressed-out grad students can be, and perpetually caught between ambition and chaos. What follows is pure Hazelwood: razor-sharp sarcasm clashing with unnerving silences, chemistry masquerading as coincidence, a campus world where romance and research share the same fluorescent lighting. It’s nerdy, swoony, and calibrated for maximum tension.
Spice: 2/5
Slow burn: 4/5
Love on the Brain (August 2022)
Themes: STEM, neuroscience; Tropes: enemies/rivals to lovers, workplace romance, slow burn
Bee Königswasser looks like chaos incarnate until you notice how ruthlessly her brain hums beneath it all. She barrels through academia with hair dyed loud enough to be a warning sign and an interior monologue that could fuel its own conference. Drop her into a high-stakes NASA project and everything crackles: professional pressure, sarcastic rejoinders, the uneasy gravity of two people orbiting each other and pretending not to notice. It’s nerd romance at escape velocity.
Spice: 2/5
Slow burn: 3/5
Loathe to Love You (December 2022)
Themes: STEM; Tropes: forced proximity
Not a single story, but three compact explosions of STEM romance bound together under one cover. Loathe to Love You is Hazelwood in short form: novellas that are quick to read, messy in all the best ways, but each carrying that same mix of science jargon and blush-inducing chaos.
Under One Roof
Mara, an environmental engineer with zero chill, finds herself in a living arrangement that can only be described as an experiment gone rogue. She’s brilliant, prickly, and a little too good at arguing her way into trouble. It’s domestic chaos meets nerd-flavored banter, calibrated for maximum eye-rolling chemistry.
Spice: 1/5; Slow burn: 3/5
Stuck With You
Sadie could troubleshoot both a reactor and her own heartbreak. She’s sarcastic, overthinking everything, and when she gets trapped in close quarters that feel like the punchline to a bad joke, the tension builds like static electricity in a server room. It’s claustrophobic, funny, and sparks fly faster than circuitry.
Spice: 2/5; Slow burn: 2/5
Below Zero
Hannah, a NASA scientist who prefers data over people, winds up in a landscape as cold and unforgiving as her first impressions. She’s analytical to the bone, but cracks start showing once survival instincts and unexpected warmth collide. Think icy terrain, frostbitten sarcasm, and a thaw you can feel page by page.
Spice: 2/5; Slow burn: 3/5
Love, Theoretically (June 2023)
Themes: STEM, physics academia; Tropes: enemies/rivals to lovers, slow burn
Elsie Hannaway is a physicist who also moonlights as a people-pleaser. She toggles between teaching jobs and side hustles with the precision of a metronome, all while trying to pass as unbothered. On the page she’s sharp, overextended, and perpetually calculating. Hazelwood leans hard into academia here: rivalries dressed as lectures, irony so dry it could desiccate a whiteboard, and the slow-burn patience of watching ice finally crack.
Spice: 2/5
Slow burn: 4/5
Check & Mate (November 2023)
Themes: chess; Tropes: rivals to lovers, prodigy vs underdog, slow burn
Mallory Greenleaf would rather ghost the entire world than play one more match of competitive chess, and yet here she is: a reluctant prodigy stuck across the board from someone equally impossible. She’s sardonic, weary beyond her years, and yet every move she makes is threaded with that reckless, youthful energy Hazelwood doesn’t usually let herself indulge. This isn’t the lab-coated STEM chaos of her adult novels but a sharp detour into YA: rivalry as foreplay, strategy as subtext, and the unmistakable sting of being nineteen and out of excuses.
Spice: 0.5/5
Slow burn: 3/5
Bride (February 2024)
Themes: vampire & werewolf; Tropes: marriage of convenience, enemies to lovers, slow burn
Misery Lark — even her name sounds like a warning. She’s a vampire with enough bite in her personality to match her fangs, suddenly pulled into a political arrangement that feels less like matrimony and more like a dare. Hazelwood swaps out labs for bloodlines here, but keeps her trademarks intact: sharp irony, heroines who’d rather combust than compromise, and a slow drip of attraction that builds like a dangerous experiment. Paranormal, yes, but still Hazelwood through and through.
Spice: 2/5
Slow burn: 4/5
Not in Love (June 2024)
Themes: contemporary; Tropes: enemies to lovers, opposites attract, forbidden love
Rue Siebert walks onto the page already armored, all sharp edges and bad timing, like someone who knows exactly how to ruin her own night and does it anyway. The book hums with Hazelwood’s familiar tension but swapped into darker tones — less neon lab, more dimly lit bar where every glance feels like a dare. It’s brittle, magnetic, and a little dangerous, the kind of romance that keeps circling back to the question: what if wanting someone is the worst possible idea and still impossible to stop?
Spice: 3/5
Slow burn: 3/5
Cruel Winter With You (November 2024)
Themes: contemporary; Tropes: second chance, small town
Grace Porter is done pretending she isn’t still furious: at the snowstorm, at the past, at the man fate just locked her in with. She’s practical to the bone, sharp-tongued when cornered, and not built for small talk (or small towns). Hazelwood sets her against a backdrop of frozen roads and colder silences, where every shared glance feels like reopening an old wound. The result is winter romance that proves proximity and history are a dangerous cocktail, especially when served with frostbite and unresolved feelings.
Spice: 2/5
Slow burn: 3/5
Deep End (February 2025)
Themes: sports romance with hints of STEM; Tropes: opposite attracts
Scarlett Vandermeer used to slice into the pool like she owned it. Now every dive is a question mark — about her body, her head, her future. Hazelwood sets her against the backdrop of elite swimming, where chlorine stings and ambition burns hotter than the sunlamps. Scarlett is prickly, vulnerable, and entirely magnetic: one minute making you want to scream into a towel, the next making you ache with her need to prove herself. The book is physical in every sense — sweat, speed, the terrifying intimacy of someone watching you crack open. It’s romance with a stopwatch running.
Spice: 3/5
Slow burn: 4/5
Problematic Summer Romance (May 2025)
Themes: contemporary; Tropes: opposite attracts
June Chu is supposed to be brilliant, and she is, but brilliance doesn’t stop your life from unraveling at the seams. She’s fresh off an academic implosion, back in her parents’ house with the walls closing in, when the story throws her into a summer that feels equal parts second chance and social experiment. Hazelwood tilts her usual STEM-nerd energy into something warmer, sweatier, more combustible: poolside heat, family chaos, and the kind of attraction that simply cannot wait its turn. This one hums with resentment and possibility, all wrapped in Hazelwood’s signature sarcasm.
Spice: 2/5
Slow burn: 4/5
Hot for Slayer (September 2025)
Themes: paranormal, vampiresTropes: forbidden romance, enemies to lovers
Claire would like to mind her own business, except her business now involves killing things with fangs. She’s competent, tired, and perpetually two steps from disaster, which makes her the perfect Hazelwood heroine to drop into a paranormal mess. This novella is lean and fast, but it still drips with the author’s favorite flavors: snark in the face of danger, desire sharpening every argument, and tension coiled tight enough to sting. Vampires, hunters, forbidden attraction — all distilled into a shot-glass of chaos.
Spice: 2/5
Slow burn: 3/5
Mate (October 2025)
Themes: paranormal romance, werewolves; Tropes: fated mates, forbidden love
Fox D’Lyte doesn’t exactly blend in, not with wolves prowling at the edges of her world and a political order built on grudges older than memory. She’s sharp, restless, and forever caught between instincts: human, were, survival, desire. Hazelwood leans fully into the paranormal here, crafting a landscape where pack politics and personal loyalties clash until sparks feel like claws. The book’s pulse is feral and intimate all at once, with enemies circling, alliances tested, attraction baring its teeth. It’s messy and primal.
Spice: 3/5
Slow burn: 4/5
FIRST (October 2025)
Themes: dystopian, post-apocalyptic romance; Tropes: survival
Published through Kickstarter and not widely available, FIRST is Hazelwood’s experiment in “what if the world actually ended but romance didn’t get the memo?” The collection gathers dystopian tales where survival and intimacy rub shoulders, proof that even in post-apocalyptic rubble people still make questionable choices about who to kiss. It’s shorter, darker, and more fragmented than her mainstream work, but the Hazelwood fingerprints are obvious: women who keep pushing, irony laced through despair, and sparks lighting up the ruins.
Spice: 1/5
Slow burn: 2/5
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