Can you delete websites individually on the iphone 4s?

I'm worried that my boyfriend goes on websites that I don't like. He promises and swears he doesn't go on them. He doesn't have a laptop or computer or anything. He has his iphone 4s. I delete his history everyday at the end of the day, but i feel like he deletes the websites he doesn't want me to see and leaves the rest. So my question is, is there a way to individually delete websites or do you really have to clear it all?

There's a way to conceal browsing history for a specific amount of time, this way he wouldn't actually have delete certain entries.

You can enter what's called "private browsing" which does not save your browsing history to your phone while in this mode. It's an easy on/off feature, and leaves old browsing data intact.

Please view this article for more information on how to enable/disable this feature: http://browsers.about.com/od/howtousemobilebrowser1/ss/How-To-Enable-Private-Browsing-In-Safari-For-Iphone.htm