Title: Billion-Dollar Ring Ruse
Description: fake engagement, forced proximity, billionaire romance by Jadesola James.

A diamond deception... too tempting to deny!
Having clawed his way out of poverty, billionaire Desmond Tesfay is on the cusp of a career-defining acquisition. So his client's alluring PA Valentina Montgomery is...distracting. And when their impossible-to-resist encounter is exposed there's only one solution to save the deal and Valentina's job--fake their engagement!
As Desmond's temporary fiancée, Val can open up her boss's exclusive world. Though after a disastrous marriage, she'll never invite anyone into hers again. Yet as their public charade continues, Valentina finds herself ever more tempted to explore their explosive connection behind closed doors...

 ♡Billionaire Dollar Ring Ruse - Jadesola James (Desmond Tesfay & Valentina Montgomery Ali) 
adultry adultry adultry 
- and inconclusive ending
But h is 10 yrs older than H
People: Desmond Tesfay, Valentina Montgomery