A new psychometric instrument, the Love Scale, was developed for measuring feelings and attitudes associated with being in love. A series of items was constructed to provide measures of five components assumed on the basis of philosophical speculation and previous research to be basic to the love experience: Respect, Congeniality, Altruism, Physical Attraction, and Attachment. Both the total and the subscale scores proved to be highly reliable. The significant differences between Love, Dating, and Friendship groups clearly indicated that the Love relationship can be distinguished empirically from that of Dating or Friendship. Most important to a Love relationship appeared to be Attachment and Physical Attraction.