There is an old allygory: Two hedgehogs stay in the same hole to hibernate.If they get too close they would stap each other or they will feel cold.So they should keep the appropriate distance for each other.
The leitmotiv of this little story is keeping distance is nessary in daily intercourse.Everyone has the own room both in mentally and materially.Get too close will make the people around u feel stressful and uneasy,this will not prove ur interpersonal relationship but reaction.
Don`t ask people the private question ,no age,no marriage;Egregious concern will make embarrassment.
Don`t be worry , Keeping distance is a virtue not apathy,and also make u more gentle. Leave room for other people
is equaly to make space for uself.