YOU SAID:

I want to go to the cinema with my lover who is also my best friend and sister

INTO JAPANESE

私も私の親友の妹、私の恋人と映画を見に行きたいです。

BACK INTO ENGLISH

I'd like to see my younger sister of my best friend, my lover and the film.

INTO JAPANESE

私は私の親友、私の恋人、映画の私の妹を見てみたいと思います。

BACK INTO ENGLISH

I think I'd like to see my best friend, my lover, the movie of my sister.

INTO JAPANESE

私は私の親友、私の恋人、私の妹の映画を見たいと思います。

BACK INTO ENGLISH

I think I want to film my best friend, my lover, my sister.

INTO JAPANESE

私は私の親友、私の恋人、私の妹を映画にしたいと思います。

BACK INTO ENGLISH

I think I want to film my best friend, my lover, my sister.