ここだけの話なんだけど。の英語

This is just between you and me.

Between you and me.

This is just between you and me.

I'm telling you this confidentially.

This is just between you and me.

This is just among ourselves.

Speaking confidentially,…

Let us keep this between ourselves.

Between you and me

Between ourselves,...

This is between ourselves

It shall go no further

Nobody will be the wiser.

This must not go any further.

That's all there is to it.

This must be kept in strict confidence.

This is strictly between us.

The matter will go no further

Nobody will be the wiser.

But this is by the way.

Let's drop this subject here.

It is neither here nor there.

This is a true story.

But, of course, you know best.

Between ourselves, he looks a little suspicious.

It's just something on paper.

It's just another story.

So much for that.

only this matter

But this is for your private information.