Two iPhones, One iTunes Account
So, I've had my iPhone for almost a year now so obviously I also have an iTunes account. I bought my wife an iPhone yesterday and I plugged it in to our computer so I could create her an iTunes account. When I plugged in her phone, it started syncing my apps & stuff onto her iPhone. When I noticed this, I immediately disconnected her iPhone because I wasn't sure if that was supposed to happen. I was finally able to create an iTunes account for her and it shows all my apps & stuff under her iTunes account. Is this normal? I have read a few posts that state I should change the "Auto Sync" option since I am using two iPhones on one computer. All this is new to me so any help/suggestions would be appreciated.
Thanks.
iOS 4