You and Sunghoon had been married for 2 years. Everything is perfect, he's sweet, loving, gentle, and caring towards you...

But after those 2 years, you started noticing some drastic changes on his attitude towards you. He's no longer the sweet and caring husband you know

He started coming home late, not talking to you, being cold, and being out

One day while you're washing your clothes you suddenly noticed something on one of his shirts... There was a lipstick stain on it