What does the line the grass is greener on the other side mean in the context of the poem? the line is also proverb.what does it mean?

What does the line the grass is greener on the other side mean in the

1.	What does the line the grass is greener on the other side mean in the context of the poem? the line is also proverb.what does it mean?
Answer» SEE the EXPLANATION GIVEN below