Some things are better left unsaid ... Despite having the urge to just let it all out...

有些是事情最好别说出口。。。。

不是每一个人都会体谅的。。。。

I think he noticed something amiss but has no idea what is going on.... But I refuse to say a word.

he probably won't understand even if I did tell him but it's necessary for me to do this.

It's for the best ....