My galaxy s6 sending pics from my son's #

[AC Question]

I recently updated to marshmallow. Since then, if I send a pic to someone, it shows as being received from my son's # instead of mine. If the recipient replies to that pic message, it goes to my son's phone. Any help would be appreciated

 

[tube517]

Is your gmail account on your son's phone? Or is your son's phone number tied to your gmail/google account?