Internist pretends to cheat on wife - he doesn't know she's sick

I am trying to find the name of a drama after I saw a video on TikTok.

The husband saved all of his money to pay for her mother's hospital fees. The wife pretends to be indifferent because she has inherited the same disease. He tries to rile her up by parading women in front of her, but she ignores him. 

What is this drama?