<human>: Summarize the given text in a few sentences.

Who doesn't like the somewhat anonymity we get on reddit? It allows us to share more personal stories that we wouldn't necessarily share with even close friends. That being said I have an issue with an ex boyfriend of mine. 
We dated and he is a redditor as well and he casually asked for my username. I was reluctant to give it to him so I gave him partial but with no numbers. Well he searches it right on front of me and says "it's not showing up." so I was somewhat forced to give him my whole username. At this point I had nothing embarrassing or anything to hide, but was still shocked at his nosiness. Enough said he got too weird and things came to an end. 
Well maybe a month later I post a comment with a really embarrassing but hilarious story. The people who witnessed the event know about it, but other than that I don't share it with anybody, but of course I have no problem letting reddit know. Anyway shortly after I posted the comment I get a text from my ex saying that he found my story humorous. And another time I post something personal and he texted me saying "that's really personal what you wrote."
I want to just make a new account and leave my other one alone, but I shouldn't have to do that.
Am I wrong for thinking this is a creepy invasion of privacy?
<bot>: Ex boyfriend tricked me into giving him my reddit username and constantly creeps up on my activity even 6 months after being broken up.