It depends.what's it like to have a younger sibling that has a big age gap between you.
Some are some aren't.You feel protective over them if they are younger than you, especially if alot younger.
Some are some aren't.
Some are some aren't.
Yh even though there maybe sibling rivalry, most of the time its not serious, they grow out of it and become close friends.
There's no sibling rivalry in my family. Our parents taught us to not jealous to anyone, and taught us that as family we must always understand each other.Yh even though there maybe sibling rivalry, most of the time its not serious, they grow out of it and become close friends.