Looking on the internet deeply has found these results:

Before you come here is the most popular phrase on the web.

Before you came here 11,020,000 results on the web	Before you come here 14,030,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Before you came here, did anyone hurt you? So, you were a maid before you came here. I told the D.A. I'll tell everything, even before you came here. We met in the town hospital before you came here. Right before you came here last night, I had a meeting with Henry Wilcox. Things were very quiet before you came here, Monsieur. You saw it just before you came here. Before you came here I had two friends who helped me and they were both murdered.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Before you came here

11,020,000 results on the web

Before you come here

14,030,000 results on the web

More popular!

Before you came here, did anyone hurt you?
So, you were a maid before you came here.
I told the D.A. I'll tell everything, even before you came here.
We met in the town hospital before you came here.
Right before you came here last night, I had a meeting with Henry Wilcox.
Things were very quiet before you came here, Monsieur.
You saw it just before you came here.
Before you came here I had two friends who helped me and they were both murdered.

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