After a string of lousy boyfriends, chemical engineer Penny Popplestone is developing a theory: boys are nothing but trouble! So she swears off men until she can figure out why they keep cheating on her. But her no-men resolution hits a snag when the mysterious and superhumanly hot barista at her favourite coffee shop strikes up a friendship with her.

Penny strives to keep things platonic, but when Caleb gives her the kiss of her life, she realizes he wants to be more than just friends. Tired of always being "good little Penny," she throws caution to the wind and pursues a no-strings fling with the hottie barista. It's not like they have anything in common beyond scorching physical chemistry, so what does she have to lose?

Her heart, it turns out. Now, this fanfic-reading, plus-size heroine faces an unsolvable problem. What do you do when being apart is unbearable...but being together is impossible?

An #OppositesAttract STEM rom-com, and book three in the Chemistry Lessons Series, originally published as Advanced Physical Chemistry. Each book in the series features a brand new couple with their own HEA and can be read in any order.

A swoon-worthy and sweet rom-com from Susannah Nix, author of My Cone and Only.

Dating Theory 1: Opposites attract . . .

Everything about the guy in the apartment next door drives Esther to distraction: his hipster beanie, his movie and food opinions and the fact that he won’t stop talking to her.

That is, until she realizes she can use him to distract her best friend from a bad-news ex. Esther strikes a deal with Jonathan: he can borrow her rocket-scientist knowledge for a movie script he’s writing, as long as he asks her friend out on a date.

Dating Theory 2: Enforced proximity can lead to trouble . . .

Only, the more time Esther spends with him, the more loathing turns into attraction, then into something even deeper. Before she knows it, he’s broken down her carefully constructed defences and thrown her well-ordered life into chaos.

Dating Theory 3: Love is more complicated than rocket science . . .

Dating and Other Theories is a #ForcedProximity #OppositesAttract STEM rom-com and book two in the Chemistry Lessons series.

Each book in the series features a brand-new couple with their own HEA (Happily Ever After) and can be read in any order. Continue the romance with The Boyfriend Hypothesis.

Originally published as Intermediate Thermodynamics.

Opposites attract when a super-intelligent geek girl meets a bad boy billionaire in The Love Code, a STEM rom-com from Susannah Nix.

When Melody accepts her dream job at an LA aerospace company, the last thing she expects is to run into a college one-night stand. But, not only does he work at the same company – he's the CEO's son.

Jeremy's got a girlfriend and a reputation as a bad boy, so Melody resolves to keep her distance and focus on building a new life for herself. But despite her good intentions, she can't seem to stay away from him.

As the two begin to forge an unlikely friendship, Melody's attraction to Jeremy grows deeper than she's ready to admit. Can the woman who always plays it safe take a risk on the man who's all wrong for her in all the right ways?

An #OppositesAttract STEM rom-com, The Love Code is book one in the Chemistry Lessons series. Each book in the series features a brand-new couple with their own HEA and can be read in any order. Continue the romance with Dating and Other Theories.

Originally published as Remedial Rocket Science.