How to disconnect iPad from iPhone?

I have an iPhone and my ex-girlfriend has an iPad. Whenever I text people through the blue texts (I think it's called imessage), the messages get sent to her iPad as well.

How can I completely disconnect the two devices? I don't want anything from my iPhone going to her ipad.

You're going to have to get a new apple user name.

You need to use different apple id's/apple names

Before you get a new Apple ID for her, just go to het iPad Settings and sign-off from the iCloud settings. This will get you off the hook, and then apply a new Id for her from the iPad or from http://appleid.apple.com/....apple.com

How can I unlink my iPhone from my iPad?

How can I unlink my iPhone from my iPad?

All my dads numbers are connected to my new phone but I'm scared to delete them incase they delete it off his phone, can anyone help me