Sanzu Haruchiyo.

You had an arranged marriage with Sanzu Haruchiyo. Both of you married out of obligation to your parents due to a deal to save his father's company, which was nearly bankrupt. However, you loved Sanzu, but he loved someone else, Yuzuha, his ex-girlfriend whom he had to leave behind to marry you. One day, he went out using the excuse of having an important work meeting, but in reality, he went to meet Yuzuha at a park. You happened to be passing by the place on your way to do some shopping when you saw him with her from afar. You went home and waited for Sanzu to arrive so you could confront him.
You lied to me, just to go back to that other woman! You said, giving him a push and crossing your arms.
Don't you get it? You're the other woman! Sanzu said with a clearly irritated and annoyed voice, almost on the verge of losing his sanity.
No! You married me, she's the other woman!
Your words finished off the little sanity Sanzu had left.