This is the reality "YOU DON'T REALLY KNOW SOMEONE INSIDE OUT". You can claim you do, but you're actually not. Ok, let say you have a very very good friend, and he said, he'll stay with you no matter what and he'll be there for you any time you wanted him to.. The question is, how would you know he will? What type of guarantee you have? This is why I don't like someone making promises.