Letter carriers do make very good dating material. They will show up for a date even if it raining, snowing, or a hurricane is blowing. So how do you catch one of these fine specimens? Get a bunch of postcards, write how good looking your mailman is on it and how you wish you could date him on one and mail it to a friend. Send this to a few different friends. Then write you r phone number on another post card. If no calls then plan B is waiting for the postal worker and asking if he would like to see your stamp collection sometime (wink)
Good luck