No specific months or time that you need to engaged to prove it was genuine relationship, second, you dont need to give
loads of pictures to prove you met each other, 4 pcs will do, just to show you met personally, third, keep all the archives of
your chat or how you contact each other will help for the ECO's decision, and once they are satisfied to all your documents of
how genuine the relationship, you dont need to worry about the interview, they only conduct interview if they are not
satisfied how real the relationship is...
Good Luck !!!!