If I change my password will I log out automatically?

My friend has the Facebook app and has logged herself and me on there before. (I said this was okay).
The app can automatically log me in on her iphone 5 without the "password" business.

If I changed my password, would it log me out of her Facebook app automatically and therefore she can't log in my account anymore?

Facebook has the option to log you out of your open sessions, so do that first, then update your password, and you'll be fine.

It won't automatically log her out - you would have to end her session too

Just change your facebook password and select log me out from other devices and its done!

Just open your profile and go into your setting and immediately change your password first.
Just go into your setting panel and then manage your privacy settings, timeline and tagging settings.
If you want to nothing interfere by anyone then blocked him.
Hope this will help you…