I won't really give trust to people I've met and been friends with for just a year, I usually have friends that have been there for me for 1+ years.
I only trust the friends I know I CAN trust, some friends can't do that for me...
I can predict most of my friends reactions when I trust them, like giving secrets and everything, but most people CAN and can't have your trust. If you know them well enough that you can trust them, go for it.