true love

(uncountable) The form of romantic affection that is considered pure and wholly positive, not just based on feelings of lust and sex.

(countable) The unique individual for whom one feels such affection.

(countable) A thing for which an individual feels an intense love.

(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.