<human>: Can you condense the text into a few key points?

First of all I just want to make sure I clarify that I never actually posted the photos online, I only threatened to do that.

Long story short I found out she was cheating on me and we then soon after broke up. Even though we had broken up she would continue to message me on Facebook and text me basically rubbing it in that she was with the person who she cheated on me with. All I wanted was for her to leave me alone. What broke the last straw before I posted them was she signed into my Facebook and changed a bunch of my settings making me "gay" and righting a bunch of statuses about it. I then told her if she didn't stop and leave me alone I was going to post her nudes on the internet. Well it worked and now I haven't heard or spoke to her in almost two years.

My dilemma is If I get a new girlfriend should I tell her about this? If so when should I tell her? Before or after we start dating?
<bot>: I once threatened to post my exes nudes online and if I get a new girlfriend if I should tell her that I once did that.