it's a small world...

Here's something a little complicated yet funny.

I worked at restaurant #1 with C.
C quit restaurant #1 and started working at restaurant #2.
I start working at restaurant #2 with C for extra cash.
C quit that job and gets job at another restaurant.

J works with her at this other restaurant, but also works at restaurant #1.
J told C my ex-boss who fired me from restaurant #1, used to work at restaurant #2 before I got there.

This is interesting; not sure if it's true, but it would explain A LOT.

Okay, so, advice?

My previous manager [meatloaf man] once told me:
"Noelle, stop being friends with the people you work with."

How close is too close to be with your co-workers anyways?
This is my question.
Because, if I'm there 40+ hours, shouldn't I be able to get along with them?

And also, how much of your life is it okay to let co-workers in on?
This is just a bit more serious, type of, hey can you give me some advice or experiences blog..