Pedro falls in love with her, but has never seen her face, as he uses blurring eye drops to overcome shyness.
She calls him one day, and the two set up a date. Pedro, worried that she'll be ugly is once again tempted to use the eye drops at the date, but his plan is foiled, as he accidentally drops them in the restaurant bathroom.
In the end, he meets, and sees, Susanna, and falls in love with her, not for her beauty (some of which she has), but for her joie de vivre.
He no longer needs eye drops, as he can now simply look at her.