Used when someone doesn't want to share feelings or form a close relationship with another. Since she's been hurt before, she keeps potential partners at a distance.
Pro Tip 2/3
Temporary Measure
It can indicate a momentary need for space until a situation or relationship improves. He's keeping everyone at a distance just until he figures things out.
Pro Tip 3/3
Personal Boundaries
It may be used as a strategy to enforce personal boundaries without confrontation. She finds peace by keeping chatty coworkers at a distance during work hours.