Is a husband sinful for repeatedly bringing up past sins?

The Prophet ﷺ said in a very scary hadith that Allah forgives all people, the hadith in Sahih Bukhari, apart from those who sin in public. And so he explained what does it mean to sin in public. The hadith continues. Those who sin at night may have committed a sin at night and Allah has covered it up for them. Meaning, it's just between that person, nobody else knows. And then in the morning time, that person then goes and tells others about that sin. What does this mean? It means the Prophet ﷺ is telling us, if you tell others about your sins, this is telling it to the public. It's equivalent to this and this is one of the things that Allah says he will not forgive. So please, please always cover up your sins and we ask Allah to forgive us all for our sins.