For Happiness

   What you're talking about is not happiness, it's perverted Hollywood slop. The idea that if you love someone, you have to let them go is beyond the absurd. Happiness and love are in the union of the union with the beloved and not in the separation.

   In my opinion, romantic love is selfish. I can judge by my love for my child. Yes, I would always sacrifice myself for the good of it. If I have to, I give my life without thinking. This is true, unconditional love. Before I had a child, I didn't know her.

   Someone ready to give their best, to sacrifice, etc. AND ALL THIS COMPLETELY USELESS .. without any expectations .. while reading your question I just thought that such love that you are talking about is really possible only from parent to child. Because a person accepts his child as an extension of himself, as an extension of his self. Human nature is initially selfish, but for a number of reasons it is stubbornly and widely denied. Even now that I think about it, this seems to be the most stubbornly denied truth about human nature in human history. However, it is not profitable for any person to admit that he is selfish, regardless of where he is in the hierarchy, to which economic stratum he belongs, in what environment he is, and so on.