YOU SAID:

we can make it just the two of us

INTO JAPANESE

私たちはそれを私たちの二人だけにすることができます

BACK INTO ENGLISH

We can only make it to our two people

INTO JAPANESE

私たちは二人にしかできません

BACK INTO ENGLISH

We can only two people

INTO JAPANESE

我々は二人しかいない

BACK INTO ENGLISH

We have only two people

INTO JAPANESE

私たちは2人しかいません

BACK INTO ENGLISH

We have only two people