Sharing with others
When you are a grown-up person, sharing your personal experience and telling others about your private life doesn’t seem to be appropriate. This is typical of teenagers since they do not understand the difference between the stuff that you can share and something that you should keep to yourself and your partner. As an adult person, now you are advised to be cautious with what you say. Respect your beloved one and protect your own privacy.
Is it just flirting or something more genuine?
Genuine interest differs from flirting but not everybody can distinguish these two. We sometimes take flirting for genuine feelings. This is a very common mistake. People who are in search of a life partner do want to believe that the people they correspond with may be potential partners. This can never happen though.