A Gal had a some chocolates with her and a Boy had a few colorful marbles with him. the gal said lets exchange the marbles for chocolates and the boy agreed.

The boy hid the biggest marbles or himself and gave the rest to the gal. The gal on the other hand gave honestly every chocolate she had for the marbles.

That night the gal slept peacefully and happily and the boy was restless thinking did the gal also hide any chocolates the same way he had hid his marbles...

The same happens in a relationship... if you give your 100% in a relationship you would live peacefully and happily in the relationship but if u haven't given 100% then you will be restless and without peace as the boy.