I have an iPhone 4S on Verizon. I recently got a Google voice number and do not have the option enabled to receive the texts in my iMessage as well. Today I received one message of many in a conversation in iMessage in both boxes. Is this a glitch? I'm worried that the other person sent the message to my GV number during our conversation and when it appeared in both places and I responded in iMessage, it confirmed that I was the owner of both numbers. Is that possible for someone to do?