@Dicer @GoodBoyUV While I would advise he bulk up a bit (165 at 6 feet is spooky scary skeleton territory), it is not a shock that his sister found out that it was not him that was doing anything wrong. Many men will struggle in online dating no matter what they do.
And this experiment has been done several times, with women shocked each time that men were telling the truth about how much it sucks to try and find any success in dating.