Your wife is having an affair

If your wife was drinking with your sister on Saturday, and you just got a promotion at work, sorry to tell you but your wife is having an affair.
She admit it to your sister while drunk and your sister is telling everyone on reddit that she’s not going to tell you because you “don’t make her feel loved.”
They’re open on their account about living in sudbury, and definitely don’t plan on telling you, but you deserve to know.
Yes tell!!! I’d definitely tell.
You’re right.
I know right, not only will he feel betrayed by the cheating spouse, but he will have a hard time trusting family that knew and didn’t say anything.
I asked my girlfriend for fun what she would do if she found her brother’s wife cheating, and surprisingly enough she said “I wouldn’t tell him, it’s their relationship”.. surprised me to say the least, family first and all that..
Blood usually is thicker than water. How could you not tell your brother that his “wife” is having at least an emotional affair?
What has this city come to?