They just have different ways of hiding them. Some write it in a diary so it will forever be etched on paper and in memory. Some share it with the ones they trust... and some keep it to themselves and bring it to the grave. People who say they don't have any secrets are lying, for real. Even between Adam and Eve, the first lovers created on earth have secrets i'm sure. Sometimes when you love someone, you don't want to hurt their feelings by telling them the ultimate truth.
This... i learned the hard way.