Funny Blonde Joke

I used to have a best friend that was a blonde. One day we were talking about a cute guy that was really annoying at times and really cute the other times. We pretended to date so that I would be able to avoid her. After the date I told her that he wasn't my boyfriend. She asks "So what is he?". I say "Let's just say he's the opposite of 'my boyfriend." Then she says "So he's your girlfriend?"