Butcher & Blackbird by Brynne Weaver (The Ruinous Love Trilogy #1)

 

Most people look for soulmates.

These two look for serial killers.

Sloane and Rowan aren't ordinary people.

They're both serial killers.

But there's a catch:

They only target the worst of the worst.

When they meet by chance, they form a strange friendship built on one unusual tradition:

Every year, they compete to see who can track down and eliminate the most dangerous killer.

What starts as a twisted game becomes a years-long connection filled with banter, secrets, and undeniable chemistry.

But as their feelings grow stronger, so do the risks.

Because loving someone who understands your darkest side sounds perfect...

Until the darkness starts catching up with you.

Funny.

Disturbing.

Romantic.

And completely impossible to put down.