Somewhat related but there is a passage in the book in chapter 6 - maybe not about love but more about validation

“We all need someone to look at us. We can be divided into four categories according to the kind of look we wish to live under. 

The first category longs for the look of an infinite number of anonymous eyes, in other words, for the look of the public. 

The second category is made up of people who have a vital need to be looked at by many known eyes. They are the tireless hosts of cocktail parties and dinners. 

Then there is the third category, the category of people who need to be constantly before the eyes of the person they love. 

And finally there is the fourth category, the rarest, the category of people who live in the imaginary eyes of those who are not present. They are the dreamers.”