Darling(Honey,Love),we never leave each other even we die/grow old.
亲爱的,直到死亡/老去,我们也彼此不离。
My darling, we will never be parted from each other till the day we die.
be parted from each other: 离开(放弃)对方
Never betray us to the old dear
we will never leave each other even if we are old enough.