Chivalry In Chaos (en Inglés) - AJ Somers

That's the funny thing about the past:

It'll hunt you down until you have no choice but to face it.

It wasn't his life being spared that put everything into perspective. It was hers. But as Ren realizes he can't fight the pull to Dahlia anymore, the mounting dangers threaten to expose a part of himself she'll fear. 

Surviving the market horde was one thing. Now, barricaded in a house and surrounded by death, Dahlia seeks refuge in the arms of the only man who has ever made her feel safe. Even as his red flags become harder to overlook...

When Vegas becomes an unlikely haven, the clock begins to tick before Ren's darkest parts are set free-triggered by a world of corruption, crime, and secrets. As they try to ignore growing doubts about each other, Ren and Dahlia's passion burns at a pace neither could have expected.

But there are no new beginnings in the end.