Looking on the internet deeply has found these results:

I am a the who you before to be is the most popular phrase on the web.

I am who you used to be 17 results on the web	I am a the who you before to be 11,480,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
And I don't mind visiting who you used to be. We know who you used to be, before Jafar threw you out of your palace. I just want you to remember who you used to be. And I am a different woman than the girl you used to know. You've forgotten who you used to be. A lot of people told me who you used to be, but I didn't listen because you told me you'd changed, and your word was enough. There has to be someone who you used to dress like. Yes. At least it's not who you used to be.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

I am who you used to be

17 results on the web

I am a the who you before to be

11,480,000,000 results on the web

More popular!

And I don't mind visiting who you used to be.
We know who you used to be, before Jafar threw you out of your palace.
I just want you to remember who you used to be.
And I am a different woman than the girl you used to know.
You've forgotten who you used to be.
A lot of people told me who you used to be, but I didn't listen because you told me you'd changed, and your word was enough.
There has to be someone who you used to dress like. Yes.
At least it's not who you used to be.

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.