Just some midly interesting thoughts

You ever wonder when you and your best friend actually became best friends? I know some people hav known their best friend from birth, but what about the people who met their bestfriend/soul sister/soul brother later on in life, like in college. You ever wonder when was that exact moment when you'd trust that person with your life. What was the deciding factor, for you to just throw all apprehension out the window, and decide to trust that they will keep your trust, and not break it. Just wondering