noun: (uncountable) The form of romantic affection that is considered pure and wholly positive, not just based on feelings of lust and sex.
noun: (countable) The unique individual for whom one feels such affection.
noun: (countable) A thing for which an individual feels an intense love.
noun: (uncountable) The situation in which a couple is perfectly compatible and there is no better relationship, as set by a greater force such as God or fate.