My Brother’s Ex-Girlfriend book cover

My Brother’s Ex-Girlfriend

Sapphic Enemies-to-Lovers Romance
by Blair Lennox

My Brother’s Ex-Girlfriend book cover by Blair Lennox

Free with Kindle Unlimited

Pairing: FF (Sapphic)
Heat: 🌶️🌶️🌶️🌶️🌶️ Inferno
Tropes: Brother’s Ex, Enemies to Lovers, Secret Relationship, Forced Proximity, Age Gap, Renovation Romance, Bisexual Awakening, Competence Kink

My brother dated her. I’m the one she wants now.

Interior designer Megan Carter lands her dream project: transforming a crumbling Adirondack lodge into a luxury boutique inn. Then she meets the general contractor — Erin Walsh. Forty, gorgeous, blunt as a hammer, and the woman who used to date Megan’s older brother.

Erin and Ryan broke up two years ago. No cheating, no overlap, no lingering feelings. But the Carter family spent those two years treating Erin like the villain who broke their son’s heart, and Megan went along with the story because silence was easier than asking what actually happened.

Now Megan has to work beside Erin every day in a half-gutted building while a tight deadline, a demanding investor, and an entire small town watch.

The hostility is instant. The attraction is worse.

When a late-night argument at the empty job site turns into a reckless, against-the-wall hookup, they set rules: private, temporary, no family involvement, no feelings.

Every rule has an expiration date.

Erin is done being anyone’s dirty secret — especially a Carter’s. And Megan is realizing that the peace she’s spent her whole life preserving was never peace at all.

You’ll love this book if you enjoy:

✅ Brother’s ex — taboo-adjacent with no actual wrongdoing
✅ Enemies to lovers who clash on day one and hook up by chapter three
✅ Historic-inn renovation with forced proximity and a tight deadline
✅ Secret relationship with a fuse that burns from both ends
✅ Bisexual awakening — she’s dated women before, but never loved one
✅ Eight-year age gap with a blue-collar/white-collar dynamic
✅ “I called you nothing to my brother and I’ll never forgive myself” energy
✅ Slow burn that DETONATES (🌶️🌶️🌶️🌶️🌶️ — graphic, explicit, emotional)
✅ A breakup that wrecks you and a reunion that rebuilds you
✅ HEA guaranteed

⚠️ Content Warning: This novel contains explicit sexual content (graphic FF scenes including oral, fingering, wall sex, job-site encounters, and alternating control), strong language, themes of family conflict and internalized shame, bisexual awakening, a taboo-adjacent premise (brother’s ex), and a breakup before HEA. Intended for readers 18+.


📖 Read Chapter One Free

Not sure yet? Read the full first chapter right here.


Chapter One: The Contractor

The lodge looked like a woman who’d been beautiful once and had stopped trying.

I pulled into the gravel lot and killed the engine, letting the quiet settle. October in the Adirondacks was absurdly gorgeous — the kind of foliage that made people drive three hours from the city just to take photos they’d never look at again — and the morning light hit the lakefront property like it was auditioning for a tourism campaign. Golden hour at nine a.m. The lake behind the building was flat and silver, ringed with maples going red and orange, and the air smelled like cold water and decaying leaves and the particular sweetness of wood that had been weathering for a century.

The building itself was another story.

Three stories of Adirondack Great Camp architecture: hand-hewn log walls, a wraparound porch with half its railings missing, cedar-shake roof patched in three different decades’ worth of materials. The original stone chimney was intact, which was a minor miracle. The windows were a disaster — some boarded, some replaced with vinyl that clashed with everything, a few of the original wavy-glass panes still holding on through spite alone.

I loved it immediately.


Want to keep reading? The full novel is available now.

🔥 Want an EXCLUSIVE Bonus Chapter?

The Inspection — Six months after the epilogue, Megan and Erin return to the inn for a private overnight in the owner’s suite. Erin has a surprise. Megan has plans. The hottest, most joyful scene in the series — too explicit for Amazon.

More from Blair Lennox

Browse all Blair Lennox books.

Older, Hotter, Mine

Older, Hotter, Mine

Blair Lennox

A confident younger fitness star seduces the older gym owner who thinks she's too young, too public, and too dangerous to want.

FF Age Gap · Body Worship · Competence Kink

Her Mother’s Pickleball Partner

Her Mother’s Pickleball Partner

Blair Lennox

Private lessons were supposed to improve her serve — not destroy Maura's self-control.

FF Age Gap · Competence Kink · Forced Proximity

Straight Girl Summer

Straight Girl Summer

Blair Lennox

She came to the beach to get over a man. She didn't expect to fall for the woman who made her question everything.

FF Age Gap · Bisexual Awakening · First Time

The Girlfriend Tutorial

The Girlfriend Tutorial

Blair Lennox

She asked for a practice girlfriend. She forgot to practice not falling in love.

FF Best Friends to Lovers · Bisexual Awakening · Competence Kink

My Brother’s Ex-Girlfriend

My Brother’s Ex-Girlfriend

Blair Lennox

My brother dated her. I'm the one she wants now.

FF Age Gap · Bisexual Awakening · Brother's Ex

Good Fences Make Hot Neighbors

Good Fences Make Hot Neighbors

Blair Lennox

She plans perfect weddings. She can't plan what she feels when the contractor next door makes forty-seven feel dangerous.

FF Age Gap · Bisexual Awakening · Competence Kink

Never Miss a Release

Get new release alerts, exclusive bonus content, and reader-only giveaways.

Join the Enigma

All Fractal Enigma releases across every pen name. New books, exclusive bonus chapters, reader-only giveaways.

Please wait...

Thank you for sign up!