A.They are focused more on attraction than love.
B.They were done by his former colleague at Yale.
C.They were carried out over a period of some thirty years.
D.They form the basis on which he builds his theory of love.
A.The relationship cannot last long if no passion is involved.
B.Intimacy is essential but not absolutely indispensable to love.
C.It is not love if you don't wish to maintain the relationship.
D.Romance is just impossible without mutual understanding.
A.Which of them is considered most important
B.Whether it is true love without commitment.
C.When the absence of any one doesn't affect the relationship.
D.How the relationship is to be defined if any one is missing.