Sib.ling
One of two or more individuals having one or both parents in common; a brother or a sister

That's that. We are related. The dictionary even says so. We have both parents in common. Well, I am glad we are related. My brother Matthew can be bit of a ham.. but he's a good guy. We just celebrated his 23 birthday. It was fun. A few years ago, you wouldn't catch us hanging out and having fun.. I guess you can say we didn't like each other very much. But now I consider my little bro one of my best friends.