A method for providing relevance information between users performed by one or more processors of a user terminal including receiving, from a user, a request for the relevance information between a first user account and a second user account of an instant messaging application from a user of the user terminal, collecting message information in a group chat room that includes the first user account, the second user account, and one or more additional user accounts, extracting a conversation between the first user account and the second user account from the collected message information, and displaying the extracted conversation between the first user account and the second user account along with information on the group chat room on a display of the user terminal, in which the first user account is associated with the user terminal, may be provided.