Troy paused in secret amazement at Boldwood’s wild infatuation.
All this infatuation Gabriel saw, and was troubled thereby from the time of his daily journey a-field to the time of his return, and on to the small hours of many a night.
There was a substratum of good feeling in her: her self-reproach for the injury she had thoughtlessly done him might be depended upon now to a much greater extent than before her infatuation and disappointment.
There are no more uses of "infatuated" in the book.
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He is infatuated with her.
Whatever was happening with us, it was more than just an infatuation.