Awkward Awkwardness

So my friend had had a little upset with his girlfriend the other night, but by this morning it was all sorted out. I though i would try to lighten the mood a little and chat to her on facebook chat. I clicked on the little picture of her and her friend and up popped the chat box. However it went something like this...

Me: "don't you ever go breaking his heart again, kay?"

Friend: "Wasn't me.."

Me: "Or i'm gonna have to be super mean to you and steal your barbies.... >:[ "

Friend: " I didn't break his heart."

Me: "And dont you ever do so, kay? Even if you haven't yet"

Friend: "Why are you saying this to me? I have never hurt Toby and I never will."

Don't you just hate it when you start having an argument with someone, then realise it's completely the wrong person?.... I know I do...