"I knew a man who gave twenty years of his life to a scatterb..." — Albert Camus quote meaning

I knew a man who gave twenty years of his life to a scatterbrained woman, sacrificing everything to her, his friendships, his work, the very respectability of his life and who one evening recognized that he had never loved her. He had been bored, thats all, bored like most people. Hence he had made himself out of whole cloth a life full of complications and drama. Something must happen and that explains most human commitments. Something must happen even loveless slavery, even war or death.