No. An acquaintance is simply someone you know but not very well. For example, a classmate or coworker could be considered an acquaintance because you may not know much about their personal life...
It means the year you met that person.
Does she hug everybody? If so, it's meaningless - some people are "huggers" God bless 'em. If she hugs just you, she likes you.
it means...that you mean what you mean:)