A person who is part of your family: neighbour / relative
relative
A person you have never met before: flatmate / stranger
stranger
A person you went to school with: flatmate / classmate
classmate
A person who used to be your wife or husband: ex / fiancé
ex
A person you've invited to your house: guest / flatmate
guest
A person you're engaged to: fiancé / close friend
fiancé
A person you can tell your secrets to: stranger / best friend
best friend
A person who you work with: relative / colleague
colleague
a person who lives in your street: neighbour / guest
neighbour
A person who is your boyfriend, girlfriend, husband or wife: fiancée / partner
partner