Humans are inherently social beings, whose behaviour is regulated by multiple interactions between genetic predispositions and environmental influences [1]. In-person social interactions represent the first mean to share ideas and make comparisons with others. Nowadays, communication has rapidly spread trough new environments like social networks sites (SNSs). However, the quality and the frequency of online and offline interactions may vary across individuals. In this research, we probed these differences in online interactions through the lens of behavioural genetics. Our question was if the personal expectations of social behaviour could affect the frequency in the online sociability of users genetically sensitive to experiences [2].