love-match

Noun

love match (plural love matches)

1. A marriage, betrothal, or other romantic relationship which is based on a spontaneous mutual feeling of love by the two individuals in the relationship, as opposed to a relationship based on other reasons or an arranged marriage brokered by parents or by third parties.
   • He had . . . two daughters, one of whom still flourished in single blessedness, and the other, who was greatly more juvenile, made a love-match with a captain in the Forty-twa, who had no other fortune but his commission and a Highland pedigree.1816, Sir Walter Scott, chapter 2, in The Antiquary—Volume I