I Slept With The Wrong Man (The Perfect Wife's Fall) by Preshy Vee

Seraphina Vale spent her life playing the perfect wife—quiet, obedient, unseen. Until one night, she breaks every rule she's ever lived by and meets the wrong man.
Lucien Blackwood doesn't do love. He does power, revenge, and control—and he never planned on falling for a woman whose life he's about to upend.
When secrets unravel, betrayals ignite, and empires clash, Seraphina must decide: stay a pawn in a game she never asked to play—or claim the life—and the man—she truly deserves. She slept with the wrong man.
Turns out he might be the only right one
******
"Let's be honest," Adrian said, leaning against the bar with a smirk. "We've reached an impasse. I have a proposal—an open marriage. Keep the public image, stop pretending. What do you say?"
He was waiting for my tears. He was waiting for me to beg.
I looked him straight in the eyes and smiled.
"Fine. An open marriage. I agree completely. But remember, Adrian—freedom works both ways."