YOU SAID:

if we just stay together on night what would happen?

INTO JAPANESE

ただ夜一緒にいたらどうなるの？

BACK INTO ENGLISH

What if we just spend the night together?

INTO JAPANESE

一晩一緒に過ごしたらどうですか？

BACK INTO ENGLISH

How about spending the night together?

INTO JAPANESE

一緒に一夜を過ごしてみませんか？

BACK INTO ENGLISH

Would you like to spend the night together?

INTO JAPANESE

一緒に一夜を過ごしませんか？

BACK INTO ENGLISH

Would you like to spend the night together?