Betrayal, infidelity and adultery are subjects that cause several reactions and opinions on people, until today. In different historical and cultural moments, we can say that the human being lived those situations differently. For the time being, they were socially accepted, and in other moments, punished and seen as sins. But there is a consensus in relation to the reaction of people facing the discovery of a betrayal, which causes a lot of pain, deception and a feeling of censure from those who find it out. With the happening of Internet, virtual relationships emerge, therefore, new strategies start being revealed in relation of infidelity. The virtual community Orkut, performed as a background for this project, because there is a freedom of access, on the behalf of the users, to personal information, pictures and messages which are swapped. The possibility to visualize the contents that may denounce the infidelity or betrayal of someone is huge. Thereby, this project had as its main goal, to investigate the main feelings and opinions from users of Orkut, about infidelity online. A quality research was performed with ten users through interviews online. Fifteen testimonials from the community Eu descobri pelo Orkut were also analyzed. The results mainly revealed that the swap of spicy, tender or illicit messages by Orkut, are considered betrayal, such as to visualize pictures from other men or women.