若你离去,后会无期 英语怎么说？

should you depart, nor do i want a reunion whatsoever.

If you left, we would never meet again.
用虚拟语气,而不应直接用条件句。否则感觉生硬。

If you left now, I'd expect no day for us to meet again.

If you leave, we shall never meet again.
OR
Should you live, we shall never meet.

IF you are to leave (me),never will our paths cross again sometime in the future.

If you leave without regret period.