You might already know this, but. . .
in spite of the fact; nevertheless
じゃあ、また
You know that.
じゃ,またね
Bye for now.
Okay later.
As you know.
As you know.
That is the only thing that I know.
聞いてよ。
You know what you are about
You already know that.
You definitely know that.
よく知ってるね
But you know...
またかよ