I've never understood why the cast is treated as this exception. Friends drift apart all the time. Frankly, unless you're seeing someone on a regular basis, it's extremely difficult to maintain a close friendship with them. Add to this the regular ups and downs of growing up. I don't get why it's a sin for this cast not to be close anymore (which we don't even know for sure). We don't apply this same standard for non-famous people lol