Love is not selective, just as the light of the sun is not selective. It does not make one person special. It is not exclusive. Exclusivity is not the love of God but the ‘love’ of ego.
However, the intensity with which true love is felt can vary. There may be one person who reflects your love back to you more clearly and more intensely than others, and if that person feels the same toward you, it can be said that you are in a love relationship with him or her.
The bond that connects you with that person is the same bond that connects you with the person sitting next to you on a bus, or with a bird, a tree, a flower. Only the degree of intensity with which it is felt differs.