Don't lie — you've felt the little green-eyed monster emerge when you've seen a strange friend request from someone of the opposite sex or a flirtatious message on the wall of your significant other.
It doesn't take a study to confirm that the network can make you a little off-balanced, but one has: the CyberPsychology & Behavior Journal found that among a group of Facebook-using college students, it increased relationship jealousy coincided with marked use of Facebook. (For a satirical example, watch the Facebook manners video).
Certain factors include the accessibility of information — which I particularly agree with, because if your partner is at work or in class and having a chat with someone else, you would never know and not care. But if it was plastered on his wall, you may be a little bothered. The other important point the study cited is over the lack of context of what you see on Facebook — all those girls on your crush's page could be family, for all you know.
So tell me — have you or someone you know ever experienced Facebook-induced jealousy?