英语翻译：我爱的是曾经的你

I love the one you used to be.

希望能帮到你！

My love is once you

I love the previous personality of you.

我爱的是曾经的你的性格吧。。所以加个personnality。。
不然其实就I love the person who you used to be.
或者就意译， I love the person who existed in the past. And that is you.
以上是我目前想到的说法。