This person (usually a girl) enjoys teasing someone (childish fun) they try to make u think you have a chance by keeping you interested somehow and you will proberely never get anywhere. if they are 16 or over they have a serious issue and need to grow up they usually are used to having there own way so dont let them have it unless your a childish fool
<girl> I want to have sex with u tomorrow!
<guy> really ok come to mine at about 8
<girl> i'll be there
(she'll either let you down or if shes comes she'll just sit there and when u make a move she'll say something like)
<girl> no i dont want to
<guy> whats wrong with u