Baby for My Bosses by Natasha L. Black

It’s against the rules to hook up with your boss.
But what if I get with all four of them?

Four sinfully hot ex-military brothers,
Including a pair of twins who couldn’t be more different from each other.
Working at their security firm as their assistant made me want more.
However, things change when my stalker-ex shows up.
Now they take my ex’s threat very personally.
They insist I move in with them for safety.
Things heat up incredibly fast between us.
Now I’m not just in danger from my ex.
I’m losing my heart to four men at once.

It seems like I might finally get my happily ever after,
Unless the secret I’m carrying ruins it all.