Doubting My Husband's Fidelity Unveiled His Late Brother's Tragic Secret

The third year of my marriage to Jack.

His widowed ex-sister-in-law Sophia, who was the same age as him, had returned from abroad. At midnight, she sent Jack a message: "I'm so scared being alone."

Concerned, I replied on Jack's behalf: "Jack's busy. I'll come over instead."

Just because of this, Jack flew into a rage.

"She's just my ex-sister-in-law. How dare you try to go threaten her? You're acting like a complete shrew!"

Sophia stood to the side with tears in her eyes: "Jack, it's fine. Don't worry about me."

Jack grabbed Sophia's hand and left.