Ok, here is what is happening:
In my fiances phone, she has me as a contact. My number is put in there as #-###-###-####
When she goes to send me a text message and selects me from the list, it puts my number in as ###-#### (removes the area code) which of course sends back an invalid number.

Now, if she sends it by typing my number (###-###-####) it goes through, but as soon as she leaves the messaging program, I reply, and she tries to reply back to me, it defaults the number back to ###-#### (removing the area code again).

ANYONE???