Content sharing system

A content sharing system comprising:

• an acquisition unit configured to acquire a user state including at least a visual line direction and position information for each of a plurality of users including a first user who is a user of a content sharing source and one or more second users who are users of content sharing candidates;
• an identification unit configured to identify gazed content which is content at which the first user is gazing on the basis of the user state of the first user acquired by the acquisition unit;
• a first decision unit configured to decide whether or not to share the gazed content with other users on the basis of at least one of information of the gazed content and the user state of the first user;
• a second decision unit configured to identify a second user having a strong relationship with the first user on the basis of user states of the first user and the one or more second users when the gazed content is shared with the other users and decide on the identified second user as a content sharing destination user;
• and
• a sharing unit configured to share the gazed content with the content sharing destination user.