Can I do this on facebook?

[Shantel]

I have two facebook accounts, one for family and one for friends (because I don't feel comfortable combining them) and I want to verify account #2 so I can get a different URL username.

But the problem is my mobile number is already registered on account #1. So I was wondering if I could un-register it from account #1, register it on account #2, change #2's username, then un-register the number on #2 and re-register on #1?

Sorry if that was confusing I honestly don't know how to explain it.
That's kind of a dumb rule, what if you have a secret double life and the people from both sides can't know about the other side? Having only one facebook account would reveal your secret identity because your friends from both sides would clash with one another and your whole world would come crumbling down. So stupid.

But you know, I did try it and it worked so apparently you CAN do this on facebook.
Oh and thank you both for answering.