Problem with iCloud apps, I don't understand!!!

Please help guys.

Basically I bought my iPhone with my email address and apple id. This was a whole ago. Then I bought another iPhone for someone and used the same apple Id and app store email as my own (stupidly I know).

The problem is I have just purchased an iPad and when trying to sync all my apps I noticed all my friends apps have come up!!!! How do I sort this out??? They are on iOS 4.2.1 so dont have iCloud

My question is- how do I get rid of them using my user id- ie cjange it on their phone? is there a way? Or do they have to reset their phone to register with another apple id???

Or could I just make myself a new apple id on my iPhone and iPad and start again???

I would really appreciate your help guys. Thanks

 

Thanks for your reply. How do I get someone to change their apple id? Thanks

 

Hi I tried that but it doesn't let me change my iCloud account. Do you know how I can do this?

 

There isn't any option for Icloud settings. When I go to general, settings then iCloud, it just has my old email address under account. But I can't change this. I there a way? I can't seem to change to change it.

Thanks a lot