译成英文：失去你，我从此没了爱情，没了微笑，没了生命，没了一切。我只是，不能没有你而已。

With your leaving, I lost my love, my smile, my life, my everything. I just, cannot live without you.

感觉不应该用If.
From the day I missed you, I had no love, no smile, no life, and everything was gone. I just can't go without you.

I LOSE YOU WITHOUT LOVING，SMILING，LIFE AND ANYTHING FROM THEN ON 。
I CANNOT JUST WITHOUT YOU，THOUGH。

绝对正式经典

Losing you, I will no longer have love, smile, life, everything. It is just that, I can't not have you.

LOSE YOU WITHOUT LOVING，SMILING，LIFE AND ANYTHING FROM THEN ON 。
I CANNOT JUST WITHOUT YOU，THOUGH。