The Collaborative International Dictionary of English v.0.48:

Jilt \Jilt\, v. t. [imp. & p. p. Jilted; p. pr. & vb. n.
   Jilting.]
   To cast off capriciously or unfeelingly, as a lover; to
   deceive in love. --Locke.
   [1913 Webster]

WordNet (r) 3.0 (2006):

jilted
    adj 1: rebuffed (by a lover) without warning; "jilted at the
           altar" [syn: jilted, rejected, spurned]