The Steel Hearts Trilogy

WARNING: ADULTS 18+ ONLY! Contains scenes of a highly erotic nature.
Following three couples through their adventures and romances, we start with Royce and Tam.
In the wake of a bitter breakup with her boyfriend, Tam finds herself drawn to her neighbor and friend, Royce. Thrown together, they begin a torrid love affair. Both have secrets, but they also have an undeniable attraction to each other. Will their love survive? Will they survive?
Then we have Cammie and Justin.
Wracked with guilt over Cammie's husband's death in Afghanistan, yet also attracted to the lovely widow, will Justin be able to win her heart? When an old enemy from his father's past comes to Los Angeles, Justin must protect his family and the woman he loves.

Lastly, we have Trina and Ray.
Marine Corps veteran and security officer Trina meets Ray, a cyber-security expert, and sparks fly! His past as a black hat hacker turned FBI Agent may come back to haunt him, though. Will she save him? Will he save her? Or will they save each other?

Three couples with steel walls around their hearts will find a way.