I need some iPhone help! Is anyone out there an iCloud expert?

Here's what happened: My son forgot his password to his iPhone. I read online that the only thing you can do is to restore the phone. I hooked it up to the computer and restored it. Well, it put all my contacts from my phone into his phone. I deleted them out of his phone and it deleted them out of my phone as well. I turned off the iCloud settings. He just informed me that whenever I text someone, it goes to him as well. Whenever someone texts me, it goes to me and him.

I think thats not related to iCloud. I think it is related to iMessage. Go to Settings > Messages and scroll down and you will see an option that reads "Receive at". Currently mine is set to two addresses. My iCloud account and my phone number, so I can receive messages at two addresses. Check that!