every time they request somthing new from you that means your file will delay for extra 3 more months... so do not let them request for further proofs of relationship in order to save time... it is always always better to send proof of relationship whenever you visit your wife or husband,, pictures,, phone bills... proof of funds transfered... etc... . they note everything in your file and it shows even in CAIPS notes.... regarding being desperate... sponsor should show she or he is desperate to be with wife or husband... more desperation you will show back in canada more it will work.. like sister saroo she did contact everywhere in order to heard her voice... and she did lots of efforts and got succeeded..... Hope it works for everyone...