infatuated vs sweet on

infatuated

adj
  • Excessively fond of or enthusiastic about (something). 

  • Foolishly or unreasoningly fond of, attracted to or in love with (someone). 

sweet on

adj
  • Enamored with; fond of. 

How often have the words infatuated and sweet on occurred in a corpus of books? (source: Google Ngram Viewer )