most important friend (also best friend)
closest friend
be in a romantic relationship
be together
an opinion or information that you give to help someone with a problem
advice
become husband and wife
get married
become a new mother/father
have a baby
two people, often in a romantic relationship
couple
see and speak to someone for the first time
meet/met
learn about and become friends with someone
get to know someone
married in the past but not now
divorced
have a good relationship with someone
get on (well) with someone
a person who was your boyfriend in the past (also ex-girlfriend, ex-wife, ex-husband)
ex-boyfriend
have a romantic relationship with someone
go out with someone
someone you have a romantic relationship with (your boyfriend, girlfriend, wife or husband)
partner
person you live with, but not in a romantic relationship
flatmate
stop having a romantic relationship
split up