And on the other hand, here is a nice thought, taken down from a favorite movie:
Christopher McCandless: ...you are wrong if you think that the joy of life comes principally from the joy of human relationships. Into the Wild

Does the joy of life come principally from the human relationships? Or is it in anything we can experience, in us? When you can't change reality or the people in it, you should definitely change yourself, and the way you experience reality and people. Basically, you can only work on yourself, and it is a myth that you can change anyone else to fit into your views. The greatest harm you can do to people is to take them for what you think they are; and to not see them as who they really are.

I.e. first love. For me, it was a person whom I didn't actually know. I met him 2-3 times on a dark staircase, and he told me I was beautiful. Fulstop. I did not know what he laughed at, aspired to, dreamed of. But I was deeply, passionately in love, as anyone 13 years old can be. I did not need to glimpse him for month, because my imagination was filling into the actual need for a real human presence by creating thousands of make-believe stories of how we meet, speak, kiss, and love each other.

But that person was just a shell I filled with meaning. I imagined his taste, his gestures, his interests... I was creating an image of my perfect man. But though of the same name, that imaginary creature was not the actual living man who spoke to me in the dark staircase. The huge love, swllen to some grotesque extensions, was entirely imaginary. Yet, to me it was so real.

When we eventually met in real life, I was so disappointed. He was not romantic, not so beautiful, had a boring job, and unexciting hobbies. He told me he loved me in real, but I could not feel any spark. He wrote me a poem, but it did not touch me. Yet, how was he guilty in any way... He was not. I could not blame it on him that I did not love him back. Although it was not easy to break up with the love of my life, I had to learn to love a real man. Stop imagining, listen and look, and learn to see who is that person opposite you.

I think that is one of the most important lessons in life. Not to extrapolate our wishful thinking on the external wolrd, and feel disappointed when reality does not meet imagination. Change yourself, and look the truth in the eyes.

The, the joy of life will not depend on any relationships, it will be a function only of your internal experience and your ability to perceive reality and enjoy it.