Don't Disclose Secrets:

“Among the worst type of people in the sight of Allah (subhaanahu wa ‘ta’aalaa) on the Day of Judgment is a man who enjoys his wife’s company, and she enjoys his company, then one of them goes and discloses the secret of the other.”
[Sahih Muslim, 10/8, Kitab al-nikah, bab tahrim ifsha' sirr al-mar'ah; Al-targhib wa'l-tarhib]

The chaste Muslim does not disclose his/her spouse's secret, and does not talk to anyone about whatever secrets and other matters there may be between them. The serious Muslim is above that; he/she would never sink to the level of such cheap and shameless talk as goes on amongst the lowest type of people. Time is too precious to be wasted in such vulgar behavior. They would never accept for themselves to be counted as one of those people whom the Prophet s.a.w described as one of the worst types.