What's the joke about eating fish head?

When he was young, he liked to eat fish heads and she liked to eat fish tails.

Every time two people eat fish together, he always gives her the fish head as soon as possible, and she also gives him the fish tail as soon as possible, so happiness quietly fills each other's faces. ...

Many years later, white-haired and unable to stand the waste of time, he left first. Looking at the blue diary he left behind, she carefully turned from page to page, and her eyes gradually became moist. The most profound thing is: honey gave it to me again.

I am satisfied and happy to watch her eating the fish head I gave her and the disgusting fish tail in my bowl with relish. As long as she is happy, I am willing to eat fishtail all my life. ...

He likes fish head best, but he eats fish tail all his life.

She loves to eat fish tails, but she has eaten fish heads all her life.

How many times I turn my head, I always see the same scene. I walk in front, you are behind, quietly watching me leave. Although I think the fish head is really delicious, I have to give it up because I love my fish tail more.

Cherish is always wrong, and now I made a mistake and chose to leave. Discard you, discard the fish head, find someone who may know my inner thoughts, and find someone who can give me the fish tail.

Both of them thought they loved each other deeply, but in fact they both killed each other's love unintentionally.

In fact, people who love each other should be so considerate and give their best and favorite things to each other without reservation, because love is selfless.