YOU SAID:

the only thing i'm thinking 'bout is you and i

INTO JAPANESE

私が考えている唯一の事はあなたと私です

BACK INTO ENGLISH

The only thing that I think is you and me.

INTO JAPANESE

私が思うのはあなたと私だけです。

BACK INTO ENGLISH

I think only you and me.

INTO JAPANESE

私はあなたと私だけだと思います。

BACK INTO ENGLISH

I think that you and I are the only ones.

INTO JAPANESE

私はあなたと私だけがいると思います。

BACK INTO ENGLISH

I think that you and I are the only ones.