I am at a loss ... my facebook is personal like regular life but somehow has linked my work email a gmail account to my personal facebook .How do I stop this? What setting or thing do I have to do here besides close both I am Soooooooooooooo PISSED OFF right now ladies and gents .Help please and Thank you Miss K

A gmail app with enabled access to your Facebook account.

Is exactly what it's designed to do. You can manipulate some settings. But, no guarantee you can keep your personal and private life separated. You can be certain of what you do. But you cannot be certain of what others might.

Also read this post...might explain another way gmail and Facebook can be connected...

Thanks guys . I am really so unhappy about this , seriously ... Imagine your facebook being linked to your hobby email addy Seriously if i wanted that i would do that . Thanks guys for helping ... Kendall Lynn

Anyone who knows me long enough to be still using my old gmail  addy to talk to me please use the newer ~ 3 yrs now ~ email found in my profile please . I appreciate it and apologize for the inconvenience . Thank you again , Kendall Lynn

1. Do not use facebook on your smartphone

If you don't address the hole that allowed FB to link to your Gmail account in the first place, creating a new Gmail account might fix the problem in the near term. But it could come back. And, that problem might not be anything you have direct control over.  

with how you segregate all the different apps you use for communication.

It is pretty easy to link emails and such if it is on the net. This is called data aggregation using web crawler and correlating things it finds on the net at the backend.