My best friend and I have known each other since we were about 7 or 8 (We’re 14 and 15 now), but up until about 3 or 4 months ago, I wouldn’t do that much for her. Now, we’re inseparable. We’ll talk on FB for a half hour even if there’s absolutely nothing to talk about. We both have some…quirks, lets jut say, in our families. She’s the one person that really knows everything about us, and I think I’m the same for her. I would walk to her house, which is about 15–20 miles from mine, if I knew she needed somebody. Other than that, I think I’d “keel over, dead” (as @Aster said).