Claimed by the Billionaire Brother of My Ex

The elevators dinged, and I stepped outside and walked toward Nathan's office. I raised my hand to knock but paused when I heard voices coming from inside.

"... now that Rachel is coming back, what are you going to do about your wife?"

I froze. The voice was unfamiliar but male. The word "Rachel" hit me like a slap.

"Emily?" Nathan's voice followed. His tone was dismissive, "She's a dumb bitch, even though I am screwing her sister behind her back, she'd never suspect"

My breath hitched, heart was pounding in my chest. Was this real?