Sometime, know nothing is better than know something. It's like we have a program, if we don't know that it's bugs, we'll happy about it, even the bug is there. But, then, one day, we found a bug, but we don't know where it comes from or how to reproduce it. Then, we can't sleep happily ever until we get rid out of the bug. As same as the love, when we found that the love one has some secret and just not speak it out. It's better that we don't know that the secret is there...