book cover of Forty Going on Nineteen
 

Forty Going on Nineteen

(2026)
A novel by

 
 
Two best friends. One outrageous week. Ten birthday dares. And a plan to turn back the clock… just a little.

Louise Nightingale, a routine-loving single mum, is hitting forty and feeling stuck. Enter Katie Sinclair: party planner, mischief instigator, and her best friend. She’s whisking Louise back to her hometown of Doncaster, South Yorkshire, for a week of pubs, bubbly, and very carefully crafted chaos.

The catch? Ten challenges designed to push Louise out of her comfort zone. Cue the embarrassing moments, questionable decisions, and a very familiar face—
Tom Gardner, her school crush, turned slightly-too-charming adult. He’s handsome, smug, and possibly a little off-limits or maybe not.

Full of laughter, flirting, and the kind of friendship that saves you from yourself, this is a delightfully cheeky story about love, life, and taking a few chances before forty hits.

If you love books about lifelong friendships, laugh-out-loud mishaps, and swoon-worthy, second-chance romance, this charming tale of self-discovery, daring challenges, and unexpected love will have you smiling long after the last page.

What people are saying about Forty Going on Nineteen

‘So much more than a romance, exploring the intricacies of female friendship and the complicated and often hilariously brutal realities of growing older as a woman. The fact that the leading man is an absolute dreamboat helps too of course! An absolute treat.’–Nicola Knight, author of The Night Before Christmas

‘A must-read, refreshing second chance romance novel with a heartwarming happily ever after. Take a trip down memory lane with Louise and her gem of a bestie to find out if life really does begin at forty!’–
Breea Keenan, author of Plot Twist

‘What I enjoyed most about this book was its warm-hearted optimism. It’s a story about second chances – not just romantic ones – and realising that it's never too late to embrace new experiences and ways of living our unlived lives.’–
Flora Dunn, author of Summer at Tillingford Hall

‘Forty Going on Nineteen' should be prescribed reading for all who fear the speed of the passing years. Learn from best friends Louise and Katie that life (and fun!) can begin again whatever your age and it's never too late for romance. . .’–
Sally Jenkins, author of Because You’re Worth It

‘A satisfying tale of re-finding yourself in middle age and the power of enduring friendship. A perfect sun lounger binge-read.’
–Nicola Ashbrook, author of Primrose


Genre: Romance

Used availability for Kristina Thornton's Forty Going on Nineteen


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