Now You're Mine (Possessing Her, #2) by Morgan Bridges

Info

Now You're Mine is Book 2 in the Possessing Her Duet where Hayden and Calista find their HEA. Eventually...
(A complete list of the TWs can be found on the author's website)

Trope

Dark Romance

Stalker Romance 

Touch her and Die

Blurb

Murder brought us together.
Only death can keep us apart.
The Tormentor:

Calista belongs to me... she just doesn’t know it.
The first time we met, I wanted her.
The next time, I was obsessed.
I watched her.
I followed her.
It only deepened my need to possess her.
Once she's mine, I'm never letting her go.

The Target:
Hayden Bennett is a monster, in and out of the courtroom.
Unfortunately, I need his help.
What was supposed to be a simple transaction turns into something else.
Something intense.
He’s always there when I need him,
but I don't know if trusting him is a good idea...