Cowboys and girlfriends back east

The idea is that most cowboys couldn't read and most women were too intelligent to go out west. So the girls would write letters and send them by train or stage coach. The cook was the only one who could read, so he read all the letters. They all read something like this, "I've met someone else. We're getting married." The cowboy would stare dumbfounded and ask, "what else does it say? "