As used in this Article:
     “Electronic communication” means any transfer of signs, signals, writings, images, sounds, data or intelligence of any nature transmitted in whole or in part by a wire, radio, electromagnetic, photoelectric or photo-optical system. “Electronic communication” includes transmissions through an electronic device including, but not limited to, a telephone, cellular phone, computer, or pager, which communication includes, but is not limited to, e-mail, instant message, text message, or voice mail.
     “Family or household member” includes spouses, former spouses, parents, children, stepchildren and other persons related by blood or by present or prior marriage, persons who share or formerly shared a common dwelling, persons who have or allegedly share a blood relationship through a child, persons who have or have had a dating or engagement relationship, and persons with disabilities and their personal assistants. For purposes of this Article, neither a casual acquaintanceship nor ordinary fraternization between 2 individuals in business or social contexts shall be deemed to constitute a dating relationship.
     “Harass” or “harassing” means knowing conduct which is not necessary to accomplish a purpose that is reasonable under the circumstances, that would cause a reasonable person emotional distress and does cause emotional distress to another.