Classmate
(colloquial) A person you used to have a relationship with
Colleague
Fiancé
Two people who are married or in a romantic relationship
A person that you work with
Your husband, wife, boyfriend or girlfriend
Flatmate
A friend from school or college
A person that you share a place to live
The person that you are engaged to be married to
Partner
Close friend
A very good friend you can talk to about anything
Couple
Ex