Source : Webster's Revised Unabridged Dictionary (1913)

Infatuation \In*fat`u*a"tion\, n. [LL. infatuatio: cf. F.
   infatuation.]
   The act of infatuating; the state of being infatuated; folly;
   that which infatuates.

         The infatuations of the sensual and frivolous part of
         mankind are amazing; but the infatuations of the
         learned and sophistical are incomparably more so. --I.
                                                  Taylor.

         Such is the infatuation of self-love.    --Blair.

Source : WordNet®

infatuation
     n 1: foolish and usually extravagant passion or love or
          admiration
     2: temporary love of an adolescent [syn: {puppy love}, {calf
        love}, {crush}]
     3: an object of extravagant short-lived passion