book cover of My Worst Mistake
 

My Worst Mistake

(2026)
(The third book in the Texas Diamonds series)
A novel by

 
 
Raina Huffman has been in love with her boss for years.
Not that she’s ever told him. Derek Messina'''brilliant, exacting, infuriating—barely notices anything outside of work. Or so she thought. Then she learns two things in one day:
  1. He’s just become a single dad.

    He’s proposing to another woman.
That’s it. She'''s done being the loyal assistant who quietly keeps his world spinning while her own heart breaks.

Derek doesn’t do feelings.
But the thought of Raina walking away hits him like a wrecking ball. He needs her—her sharp mind, her steady presence, the way she makes everything make sense. So he strikes a deal: stay long enough to teach him how to be a father, and he’ll make it worth her while.
But late nights with a baby, stolen glances across conference tables, and one too many almost-kisses blur the line between professional and something else entirely.
Derek''s finally realizing what’s been in front of him all along.
And Raina? She’s about to find out what happens when the boss who never loved anyone decides he’s not letting her go.

Slow burn. Forced proximity. One cranky CEO, one loyal assistant, and a baby that changes everything.



Genre: Romance



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