Dating Divorce

When my parents split up, one of them stayed in the suburbs, the other moved into the city. I didn't realize it at the time, but that type of distance is necessary when a relationship ends. You need to do your grocery shopping, movie-going and general "living" without fear of running into your ex.
But what happens when you are casually dating a guy, and then you stop. That's the predicament I'm in now.
In February, I went on ONE date with this guy. I never heard from him except for maybe one late night text...but I have seen him FOUR times (yes, I counted).
3 of the times I have seen him have been at the bar on my street. I think the bar should be my space because it is my street and he knows it!
The most recent time I saw him was at the movies. Once again, this fool (yes, now he is a fool) was out in my neighborhood on a date. I wanted to scream "YOU DON'T LIVE AROUND HERE!!!!!!!!" But I resisted.
Shouldn't there be some dating rules when it ends.
1) stay out of her neighborhood
2) Don't approach her at a bar when her boyfriend steps away to say "What's Up?"
3) Don't see me and then pretend that you didn't

That's all I got for now, do you guys think I'm overreacting?