244 Copyright © 2019, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. Chapter 14 DOI: 10.4018/978-1-5225-4047-2.ch014 ABSTRACT Online behavior varies according to the purpose and situations and many get involved in intimate re- lations, like in online dating, which have an impact on the person and his mental health. The chapter focused on the impact of online dating, cyber stalking, cybersex, and pornography on mental health. Though many studied the online dating among adolescents and adults, that of old age group is not yet fully explored especially about their sexual needs. It is worth exploring factors related to risky sexual behaviors among gay and bisexual individuals. Online dating for mentally ill people is an under- researched area. Cyberstalking is an important issue, especially among adolescents and young adults, and cybersex and cyber pornography threatens the safety and mental health in addition to the problems of addiction and child trafcking, and it is linked with high sexual risk behaviors and sex crimes. It is necessary to develop tailored psychotherapeutic and pharmacological interventions by taking into ac- count the complexity and heterogeneity of the problems. INTRODUCTION Cyber-psychology is an emerging discipline that focuses on the study of human-machine interaction. It is an area of psychology focusing on the study of the effects of cyberspace on the behavior of humans and of society in general. (Grand Dictionnaire de la langue française, 2000). It deals with cyber space interaction and impacts of virtual realities. Virtual reality can be defined as the application that makes it possible for the user to navigate and to interact in real time with an environment in three dimensions generated by a computer (Pratt, Zyda, & Kelleher, 1995). Researchers are trying to understand about virtual realities and how it affects human behavior and its pros and cons. Social networking is one of the major topics widely discussed. According to Cambridge dictionary social networking is the use of Impact of Online Dating, Cyber Stalking, Cybersex, and Pornography on Mental Health Rejani Thudalikunnil Gopalan Gujarat Forensic Sciences University, India