It is highly unlikely that we find a match now as it was lost
over 6 months ago.
can anyone translate for me?

当失去半年的物品再度寻获，真是极度不开心的事。

I guess that mean 当六个月过去我们居然会配对成功几乎是不可能的事

现在要再找到一个像我们六个月前失去的那个一样合用的（东西或人？），是极不可能的事了。