(Proverbs 5:17 KJV) Let them be only thine own, and not strangers' with thee.
Everyone does not need to know every detail of your life. Some people have a tendency to share more than they should about everything. It is bad enough when they tell all the details of their lives but crosses another line when they share the private details of others. People probably don’t want to hear and usually the ones involved don’t want you sharing about them either.
The context here is our sexual contacts. The Bible is clear that sex is to be reserved for marriage. You could extend that to talking about private matters. Tales of the bedroom, intimate details, failures of a spouse, etc. should all be kept between the people involved.
So? Just because others are revealing that which should not be revealed does not mean you need to match the tale for tale. Let love be expressed in silence.