Get Viciously Yours and Obsessively Yours in a paperback bundle. 
 
Fae Kings of Eden is a series of interconnected standalones. While the books may contain mild spoilers for each other, the plots are not that serious, and the books can be read in any order.
 
About Viciously Yours:
Rennick:
When Rennick was thirteen, the gods bestowed upon him the name of his fated mate--a human girl. As the sole heir to the Mountain Kingdom, magic bound him to his kingdom until he ascended the throne on his twenty-fifth birthday, and as a human, she couldn't cross the magical barrier separating the humans from the fae. Heartsore and consumed with thoughts of her, he did the only thing he could and sent her anonymous letters and gifts…

Until he crossed the barrier into her kingdom to claim her as his own.

Amelia:
Six months after Amelia's thirteenth birthday, she received a strange letter from a fae boy claiming her as his mate. Humans weren't taught much about the fae, and one look at the horrifying doll meant to be her belated birthday gift solidified her suspicions that someone was playing a cruel joke. Except the letters and odd gifts kept coming. Against her better judgment, Amelia fell in love with her mysterious admirer throughout the years, certain they would never meet. But on her twenty-fifth birthday, her walk to work was interrupted by two familiar words she'd read a million times.

"Hello, love."
 
 
About Obsessively Yours:
 
Roman
At twelve years old, Roman Covington—crown prince of the tropical fae kingdom—met Violet Maekin: a girl with freckles on her nose, a razor-edged wit, and the ability to make him laugh. She made him feel normal in a world that demanded he be anything but. After just a single day and a few scribbled notes, she held his heart in her hands.
But when Roman turned thirteen, the gods granted him the name of his fated mate—Vivian. Violet’s identical twin sister.
Convinced the gods were cruel, mistaken, or both, Roman spent a decade seeking a way to shift the bond from one sister to the other. All the while, a quiet madness bloomed within him.
He watched Violet from the shadows.
Stalked her in silence.
Killed for her in the dark.
 
Violet
When the king and queen arrived to announce the prince’s gods-blessed mate, Violet already knew it was her.
Except it wasn’t.
Vivian got Roman, and Violet got nothing but a splintered heart and the cruel ache of pretending it didn’t break her.
But Violet and Roman’s friendship endured… until the day she realized her feelings had grown into something vast and soul-deep, far beyond the reaches of her childhood crush.
Roman and Vivian might avoid one another now, but Violet knew the gods did not make mistakes. Their indifference would turn to love while Violet’s heart would turn to ash.
She did the only thing she could to save her heart and walked away from Roman for good.
 
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