Strike, if it makes you feel any better, I didn't have a problem understanding your point of view the first time and I did not peg you as an aspiring ninja. Nor did I think you were overly paranoid. If a dude came up to my car and my girl at a gas station at night, I'd feel the same way, and you already said that you should have been out there with her so there's no need to point that out.
Not much I can tell you, except that until you have your CHL, carry a good fixed blade knife where you can get to it. And, if you're trying to get in shape, that's a good thing too.