How did you find dad's potential mistress?

The year before last, my father wanted to apply for a mailbox and asked me to help him. When registering, he needs mobile phone authentication. When the verification code was sent to his mobile phone, his father was busy cooking in the kitchen, so I gave it to him. I turned my back on my own initiative and didn't look at the power-on password entered by my father. In our family, paternalism is very strict, and all three children respect their parents.

After my father enters the password, I need to use my mobile phone to access the computer in the study. When I left the kitchen with my mobile phone, I saw a trace of hesitation in my father's eyes: Give it to me when I'm finished. I didn't think much and said, okay. Anyway, just help him apply for an email address. It won't take a few minutes. I applied for this email quickly. Just as I was about to leave the study, my father's cell phone suddenly lit up and a short message popped up:

Honey, are you busy? Is the cold better? I miss you so much. Come to my side. The moment I saw the news, I was struck by lightning. I never thought that my father, who has been so strict and self-disciplined, had an affair. I turned on my mobile phone, and there were dozens of such messages. Dad may think that no one will look at his mobile phone, or he may be reluctant to part with it, so he has kept it. The more I look at it, the more shocked I am. I almost wanted to smash my cell phone in my dad's face.

But I didn't. I looked at the name and number of the message rationally, remembered it, and then calmly took the phone to my father. However, I checked the woman. In fact, she only likes her father unilaterally. However, although my father wavered, he had several meals with her and sent several ambiguous messages, but he never gave her other opportunities.

Actually, I'm glad now, but I'm all rational. If I had shouted, I would have alarmed my mother, and then their marriage would have fallen into the abyss of suspicion. In this way, I would have pushed my father to that woman.

Now that my father is retired, he just plays chess and reads books all day and lives a quiet old age. As for the potential mistress, he has long since stopped contacting his father.