Is it true that in SM's contract EXO are not allowed to have a relationship?
Not exactly that. Before you become a trainee it's best to close all social media and ect, because netizens dig out a lot of things which could possibly destroy your career. It's the same with girlfriends, it's recommended that you don't have a girlfriend because who knows how the public or fandom will react? Scandals either make or break your career. --hun.