Group iMessage mixed up ID I responded to a group iMessage, but it showed up as being a response from my wife.  She also has an iPhone, but our phone numbers, email addresses and Apple IDs are all different.  How in the world did this happen?  And how do I stop it?
In your settings under Messages, check your settings under Send &amp; Receive. It will show you what you are receiving Messages via (phone number and email(s)). Do any of your wife's contact details show up?