Does anyone know of a good app that allows you to lock your text messages separately from the main iPhone passcode screen lock? (I am not interested in the apps I've found that: encrypt your text into some kind of code, or ones that require some special password sent between u and the person you're texting, or invisible texts that can only be viewed in the app itself.) simply just like the screen lock but for the SMS messages only. I know it sounds like extra, unnecessary work on my part but sometimes my bf will ask to borrow my phone to make a call or play a game on my phone and rather than being paranoid the whole time while he's on it, it would be nice to know that I can leave the room or not feel anxiety every second he's on it. (I know what you're all thinking... No I'm not cheating on him, but he is rather nosey about my personal businesss related to other things) so an app like this would benefit me greatly!