Actually it's not good to bring out yourself to people, sometimes you need to keep your cool so that they will be in expectation..

Just like you said

There is a strong saying in all cultures. More you know a person, the less you would want to see your future with them. And so that goes with the strong reasoning that familiarity brings contempt. So you have to always understand that you don't share too much of personal information and instead only share the information that's necessary.

Choose what to tell people because seeing you inside out will. Make you lose your value or what they thought you were, no matter how good and loving that person is, too much of personal information shouldn't be shared..

And most times if you ain't contributing then you can't be valued...