Who can keep your secrets better ..brother or sister?

None of them. Offer them a bribe and they squeal like pigs

I dont trust either of my bro or sis, they have their own agenda... especially my sister I recently found out my sister has been making up stories about me to my parents & then blaming it on my husband so...

Liberty Belle

I trust my brother more but only as we're closer but in age and relationship too

I've never had either, I'm an only child.

I wouldn't confide in them

If two people or more know, it ain't a secret.

Definitely brother... My sisters are blubber mouths

My brother. Even as a child he could keep a secret.