In 1887, behavioral scientist Henry Theophilus Finck published a comprehensive examination of romantic love. In it he observed
love is such a tissue of paradoxes, and exists in such an endless variety of forms and shades, that you may say almost anything about it that you please, and it is likely to be correct.
Nevertheless people keep trying to define it, to pin it down — to understand it.
Here are some of those attempts I’ve encountered.