Personal space is the invisible bubble that surrounds each of us. It is the space around us that we consider our own. Most people feel uncomfortable or even threatened if someone moves inside and invades their personal space by getting too close too fast. [....]Complete strangers usually keep their distance with a good margin, often staying outside the personal space, and a person is normally never that close to someone unless he/she has known that person for a while, which means that you nonverbally assume rapport when you move in closer faster.
The writer make some confusing expressions with me here. Does "staying outside the personal space" mean "keep their distance from my personal space"? and "assume rapport" mean "have a good relationship"? but i don't believe in my opinion. Can you help me?