All 3 Uses of

infatuated
in
Don Quixote

You must know, then, that the above-named gentleman whenever he was at leisure (which was mostly all the year round) gave himself up to reading books of chivalry with such ardour and avidity that he almost entirely neglected the pursuit of his field-sports, and even the management of his property; and to such a pitch did his eagerness and infatuation go that he sold many an acre of tillageland to buy books of chivalry to read, and brought home as many of them as he could get.†
Chpt 1.1-2 *

and if, after this open avowal, he chose to persist against hope and steer against the wind, what wonder is it that he should sink in the depths of his infatuation?†
Chpt 1.13-14

Here one curses her and calls her capricious, fickle, and immodest, there another condemns her as frail and frivolous; this pardons and absolves her, that spurns and reviles her; one extols her beauty, another assails her character, and in short all abuse her, and all adore her, and to such a pitch has this general infatuation gone that there are some who complain of her scorn without ever having exchanged a word with her, and even some that bewail and mourn the raging fever of jealousy, for which she never gave anyone cause, for, as I have already said, her misconduct was known before her passion.†
Chpt 1.51-52

Definition:

deeply but often foolishly in love with or obsessed with someone or something