Never offhandedly mention you used to post on LiveJournal a lot.
Your friend may just be a jerk and search for and find your account, thinking it would be funny to live-blog the entire thing to you. Admittedly it was kind of hilarious in a mortally embarrassing sort of way. Damn my melodramatic emo kid past! As a result of said violation, I am now hiding the vast majority of my posts so nothing like this may ever happen again. Good-bye.