You're The Problem, It's You by Emma Alban

Bobby Mason is sick of being second best: born the spare with the personality of the heir. James Demeroven, is a Viscount who wishes he wasn’t one. His title brings far too much attention.
 
They can barely get through a single conversation without tensions boiling over. Neither Bobby nor James has ever met a more intriguing, infuriating, infatuating man. If only they could avoid each other entirely.
 
But when an extortionist starts targeting their families, Bobby and James must find a way to work together, without pushing each other’s buttons (or tearing them off) in the process...
 
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"Gives us all the top tier wit, spice, and swoons.... One to watch!" -  Evie Dunmore
 
"Sweet, angsty, and ingeniously subversive. A delightfully refreshing historical romance!" - Amalie Howard

"A beautifully rendered setting, whip-smart banter, and a cast of characters that are so easy to love… an instant voice to watch." -  Carlyn Greenwald