Potions & Prejudice by Tee Harlowe

Witch hates warlock.
Warlock hates witch.
Warlock falls for witch.
. . . Things get very, very complicated.

Elspeth Moonflower just wants to cast a spell. Unfortunately, that’s impossible due to a curse her grandmother cast that forces every witch in her family to marry before using magic. As a result, Elspeth and her sisters are outcasts, helping their mother run her traveling apothecary shop—while she complains that her daughters are all magicless spinsters.
When their cart breaks down and strands them in the charming village of Thistlegrove, Elspeth’s older sister meets a handsome warlock who’s smitten. If only the warlock’s best friend wasn’t completely insufferable. Draven Darkstone is broody, arrogant, wealthy—a perfect example of why Elspeth never wants to marry. But for the sake of her sister, she needs to be nice.

Which is hard when all Draven does is glower at her. It’s even harder when the glowering turns to longing glances. It’s downright impossible when he kisses her.
Little does Elspeth know, the line between love and hate just got thinner.