Your sig size is much better. Thank you.
Given your age, I'm going to answer you in a different way than I was first inclined to. You're 13, so you can't be expected to know the finer points of adult social interaction, but I'm going to do you a favor and give you a leg up on it.
Talking about someone behind his back is gossip. Now, I realize that a large chunk of this site is devoted to gossip of one kind or another, and that's to be expected of a fan site, but here's where it gets tricky. If you know someone (or a friend of someone's, or a friend of a friend of an uncle..you get the picture), it's bad manners to share personal information about that person behind his back, especially with people who don't know him. And to drop hints that you have personal information in order to tease a group of people with the idea that you know more than they do is bad manners and
tacky. You're not going to make many friends here or anywhere else doing that.
I have some advice for you that will serve you well in your future life. If you come to know someone who's popular (and fame is a larger form of popularity), don't give in to the impulse to brag about your friendship or to drop names whenever you get the chance. Be content with the fact that you know what you know and you have the friends you have without trying to impress others with that information. It can be very hard, even for adults, to do this, but you'll be much better liked by the non-popular people you know and your popular friends will learn that they can trust you.
Surely there's something interesting about you other than whatever you may know about Mike Mills. Why don't you try branching out a little bit and sharing some of that with us? The Elvis Poses
forum might be a good place to start. You may discover it's ultimately more fun than having people poke fun at you here because of your incessant name-dropping.