I sympathize, @Audrey but who is able to see what is on your timeline depends, for the most part, on you. If you go on social media to share, then you run the risk of that data being shared with others unless you’re very careful and protective of your data.
GREAT question and probably the most obvious one that we should all be asking. In fact, I’m embarrassed to admit that I didn’t think of this in advance and provide an answer in my piece, so thank you.
In theory, we can’t know 100%. In practice, I doubt FB is keeping our information for two reasons: