Talking Text messages

[JUDD227]

Ok so I got a little freaked out the other day. I know that the phone talks and tells you your upcoming appointments and is supposed to anounce incoming calls with voice when it's set up. However the other day I text a Dr friend of mine who is using a blackberry on Verizon and when he replied my touch pro told me what his text message said. Scared the crap out of me at first then I thought it was pretty cool but then I got to thinking if he types something I don't want anybody to hear I'm scr**ed. I have received many text from many people and this only happens with his text. I can't figure out what setting is allowing this, haven't tryied to turn off voice command yet as I use it alot but this could be a potential kick in the a** if your not carefull.
Any thoughts? Suggestions? Anyone else had this happen? Thanks in advance for you advise.