can people see previous messages once your facebook has been deleted?

[Morgan]

Also, if you deleted your facebook, but it was still opened in another tab, is it deactivated?

[abraXus]

yes, people can read the private messages you send them no matter what happens to your account

it's like email... once you send someone an email, there is no way to prevent them from reading it, even if you delete your email account

[Sports]

Yes but it's not easy. There is a saying "once it's on the Internet, it's always on the Internet.

[Angeleyes]

Yes, people can still see and read previous messages that you sent them regardless whether your account has been deactivated or deleted.