lovemeansneverhavingtosayyouresorry.tozheworidyoumaybeoneperson

应该是
love means never having to say you're sorry. To the world you maybe one person.
爱是不用说你很遗憾. 对于世界来说你也许是一个人.

Love means never having to say you're sorry .（to the word(?) you maybe ）
爱的意思是，从不必说你很遗憾。

你自己打得不太标准

爱意味这你不用说对不起. 整个世界你是唯一。

Love means never having to say you're sorry. To the world you may be one person, 后面还有一句 but to one person you may be the world.
爱不需要说对不起。对于世界而言，你是一个人；但是对于某个人，你是他的整个世界。