Unacquainted still leaves room open to change this, but I understand your sentiment.
If we are discussing those "feelings" though, I do say I've known and received some of the harshest. Which is why, I'd like to say 'hi', do the kind thing. I am being genuine with this; not asking for anything but kindness in return. Friendship can come later as you are willing.
"A stranger is just another chance for a friend."