Jilting

from 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]