A more thorough explanation:

Definition: A person who is being investigated or considered as potentially involved in a crime or other suspicious activity.

Example: The police have identified a person of interest in the recent bank robbery.

Explanation: In this example, the police are investigating a bank robbery and have identified someone who they believe may have been involved. This person is considered a person of interest because they are being looked at closely by the authorities.

Example: The company is interviewing several people of interest for the open position.

Explanation: In this example, the company is considering several candidates for a job opening. These candidates are all people of interest because they are being considered for the position.

Definition: A person of the opposite sex who shares living quarters with another person.

Example: John and Sarah are just roommates, but some people might assume they are a couple because they are both people of interest.

Explanation: In this example, John and Sarah are not romantically involved, but because they are of opposite sexes and share living quarters, they could be considered people of interest to others who may assume they are in a relationship.