MTL - The Life of a Villain Starting From Naruto - Chapter 124 so the answer is

Witnessing her boyfriend cheating on her with her bestie, Shiyao was so angry that she went to a pub for fun and met a man, who was really a piece of work. After a crazy night she fled away, but was embarrassed to know that the man she slept with was her boss You Ze.
Jesus, give her a break!

- Description from Novelupdates

“H-Haru.... please... go...”In the midst of the sudden and ongoing Apocalypse, which had turned their lives into a complete hell, Haru embraced his loved one amidst the sadness and despair, watching helplessly as her bitten neck turned black.The person who meant the world to him was turning into a zombie, and he felt helpless to save her.“Why... Why... Why...” Tears fell as he held her tight, not wanting to let go. He was afraid, not of death or turning into something else, but afraid of losing her once more.Yet, amongst tears and desperation, a bit of unexpected hope appeared out for Haru.[Ting! Ting! Ting!][System has now finally initialized!!][Assigning a designated Class suited for the User!!][3][2][1][Congratulations! You acquired the EX Class – Zombie’s Husbando!!][First Quest – Choose a Zombie to be your Waifu!]

Gu Changge, a noble lady from a wealthy family, is a well-known business legend in Yuncheng, going into business at 15, taking over as President of Gu Group at 18 and becoming Chairman of the family business at 30.
She is murdered by her husband Shao Tianze, just to give his mistress Gu Changle a healthy heart. But a premeditated car accident makes Gu Changge revive in a new guise and settle into an 18-year-old girl, Song Yunxuan.
The new face, young body and experienced soul become her weapons of revenge. In her struggle with the four big families in Yuncheng, can Gu Changge shrink back? Will she open her broken heart again? Can she always head off dangers in power struggles?
Let’s find out if Gu Changge can revenge herself and create glory again.

- Description from Novelupdates