Is the seven-year itch a fading of enthusiasm or a lower threshold or a difficult proposition in the heart of the end, or is it that there is an impulse to pursue stimulation in one's bones that cannot be obtained and is always in turmoil

Seven year itch

It's the enthusiasm that fades

Or the threshold is lowered

Or inner turmoil

Is it a difficult proposition to start from beginning to end?

Or say it

There is an impulse in people's bones to pursue excitement

What is not obtained is always in turmoil