"Then he got back in the car, and drove away. I watched to see if she was OK (I was going to go out and see if she needed help, or needed me to call the police), but she just walked away." - why the assumption that he's the issue here? Maybe she cheated on him or did some other kinda messed up thing? She may well have had it coming. lol

But yeah, I've seen plenty of arguments and weird stuff outside my window. The weirdest one was over where I am now. A while ago, about 3 in the morning, I heard a loud screech and then crash right outside my bedroom window. Seconds later, I heard a siren and saw flashing lights. It was dark, but the lights helped to see that, once I got a look through the window, there seemed to have been a chase on the go. There was a big van into which a copper chucked one guy. After that, the guy in the van started throwing himself around and screaming all sorts of crazy crap. Meanwhile, a cop was questioning someone else who was in the car. There was also a cop car that I think showed up a few moments later, or perhaps the car was first and van second; I can't remember. It was a fun, albeit long night.

Over here too, I've overheard a couple arguing right outside the window again and I remember hearing her scream at the guy "give me my f***ing drugs!" or something that effect. Mostly quiet here, but sometimes there are some weird happenings.

As for when I lived with my dad in a flat some billions of years ago, I remember my dad telling me a couple were sneaking around stark naked, giggling like kids. xD Thought it was funny, albeit inappropriate.

I've BEEN the person myself several times in the past. I'm not proud of it, but I've kicked, hit, and shouted things, sober and drunk. Had a lotta issues back then and none of the experience and I guess you could say education I now have. I'm usually a very quiet, respectful, hopefully-decent person, but we all have our limits.