The one who picked up from the garbage canal

I have a younger brother. We met him 17 years ago near a garbage canal.

Now we're the best siblings in the world, with no fighting , no blaming, and we're peaceful together. But, it's a big lie. We only behave like that when visitors are around. We always fight, and not fighting feels like not ate today.

Sometimes he is my side supporter in the kitchen, my instructor in digital drives, and sometimes older brother, and trusted friend. In the past, l won the flights, but it's totally different now because he's bigger than me and l need extra protection, so I use safe words like "mom, brother hit meeeee". We are totally different, he likes to hear rap music loudly, but I feel like I'm going to vomit. He's a cat lover, I'm a dog lover, because cats are haughty like him, and he love our cat more than me. He can't eat spicy food like a baby, but I'm a top spicy lover. Wherever he goes, he has lot of friends. I have only few friends, similar to the fingers on my hand. 

So what to do? Now I can't live Without that troublemaker and troubles.