when oneself is either unable to form relationships with the opposite sex or is rejected to the point they just want to be single to stay happy. Many people who are chronically single are either agressive gamers, drug or alcohol abusers, or loners but is not limited to those.
Girl 1: WHtas the deal with that boy? He looks like he could just die but he's at all those parties.
Girl 2: He's chronically single.
Girl 1: Ohhh I see. Poor guy, what could of caused it?