One reason why 'virtual rejection' hurts is because, the more you are on Facebook the more emotional ties you have to different interactions on the social platform, says an expert.
According to Jennifer Bevan, a professor at Chapman University in California, a user on Facebook gets angry and upset after being unfriended on the site, because Facebook holds a stake in our everyday life, it's part of our identity.
It hurts most when users felt they were unfriended because they of something they'd done on the social network, though the study showed Facebook users are usually unfriended because of offline-related events, Mashable reports.
According to the report, some reasons of being unfriending are excessive status posting, someone who is seen as dramatic or to avoid being influenced by someone else's lifestyle choices.
Bevan, the researcher, admits there isn't much research as of yet into this field of online interaction.
"You're basically manipulating that relationship," she said when asked if the effects of unfriending can be seen as malicious.
"I think there needs to be more cyberbullying research," she added.