And as I've tried to keep in the conversation, lest the entire thread be about the topic of rape and devolve into a men vs. women debate....the OP's question of "what measures are sensible to keep myself safe?" need not be solely a question of mitigating the risks of physical danger. It is also very possible, and in fact way more likely, that one will put one's mental and emotional health in danger by approaching a prospective relationship in the wrong way. And that danger doesn't discriminate between the sexes, at all. That one is about the buzzword o' the day, "self awareness." Which really can be about the most awesome and amazing thing, when you shed light on your true Self and banish a lot of confusion that you may have grown up with, or might have come from your more recent experiences and circumstances.
Living life, learning lessons.
The single most powerful thing I think I've ever learned in my life, is how to accept responsibility for your life circumstances and experiences without taking it to a place of fault and blame and beating yourself up over it, but rather learning and applying that wisdom to future behavior. And that basic ability seems to be shockingly absent in so much of our society, to me it's a wonder anyone can function at all.
From my own life, example #1:
When I was 14, I got the stupid notion in my head that my mother and I should dress sexy and go to a carnival in the middle of the night. I had an image in my mind of being just like Star from The Lost Boys, I think. Wasn't she sexy and powerful and cool? I wanted to do that. So we did. And we ended up with a couple of drunk men who originally hailed from rural Mexico but were in the DC area working construction. The one who attached himself to me wasn't bad looking. He was in his late 20's. I was having a good time, enjoying being attractive, we all ended up back at my house...but when things got very physical, I suddenly felt an INTENSE revulsion and desire to get away. I tried to say no, and I tried to get away, and Victor (a name he chose for himself, not the one he was born with, I'm sure) was having none of it. I was very aware that in this situation, I was either going to give in and let him "finish" or he was going to beat me badly, and then have his way anyhow. I decided that I didn't want to force him to subdue me, so I got it over with. Afterwards, I felt as though I'd stepped in dog shit with a bare foot...I washed and put it behind me with no further trauma than a vague sense of disgust.
Since then, every time I've told that story, I have had people (women especially) tell me that I am a victim, that I have trauma I don't recognize and should seek therapy, and that this clearly must affect everything about who I am since then, and try to give me sympathy. That response makes me ANGRY for reasons I find a little hard to express. I say...yes, while I don't beat myself up over it, I was 14 and stupid, but I had the dumb-shit idea to go pick up men in the middle of the night at a carnival, I encouraged things to that point, and let him have every reason to expect he was going to get laid, and furthermore he was from a culture different from my own where the rules aren't quite the same. Lessons learned. I have not since put myself in such a situation; I KNOW BETTER. I'm not walking around cowering in fear, clutching my purse like a weapon or carrying pepper spray...but I am more aware of sitautions, and the people I'm dealing with, and the signals I may be sending them. And I avoid drunk men, and particularly being alone with drunk men.
I want to OWN the wisdom I gained from that experience. I don't want sympathy. I don't want a "victim" badge to pin to my lapel, I don't want a diagnosis to excuse any failings I might have in life. Was it that guy's fault? Sure, whatever, but you know what? I can't control him! I can't control any other human being in the world. But I can control myself. In a way, when other women talk to me about how I was a victim and I must stop thinking the way I do because I'm "blaming" or "shaming" myself (which I'm not)...what they're doing is telling me to stop trying to claim power I don't have, and give it into the hands of the rapist where it belongs. When the police (other men) punish the person with the power (man) then things will be right. My role is to cry in the corner until men avenge my broken honor.
Well, those women can suck it. I don't feel that way and I never will.
As for Victor, I haven't seen him in at least 22 years and I doubt if I ever will again...and I don't care what happens to him in the slightest!
A jellyfish once stung me, and then was lost in the sea, and I never got a chance to punish that jellyfish, and I care exactly as much, which is to say not at all.
Example #2 from my life:
The one I've already talked about where I thought I might be down for casual sex, and the guy said he was looking for love, and I jumped in recklessly and found out that he wanted only casual sex with me, and I was "in love" (NRE) with him. Emotional disturbance and confusion and misery ensued.
Now I know, that what I was reaching for was not "casual" it was more "solo-poly." Or at least the "solo" part of the definition, because I believe I could be mono if that was my circumstance...but merely because I don't want to ride the escalator doesn't mean I don't want to have feelings and a relationship.
....
Guess which of those two examples caused me more suffering? The second one. BY FAR.
In both instances, I analyzed the situation after the fact and took ownership for my own part in the engineering of the outcome, learned from my mistakes, and gained wisdom. I don't feel one single ounce of shame for any of it, merely because I acknowledge that I made some mistakes. That is how we live, that is how we grow. And being able to do that is a HUGE part of learning how to keep yourself safe in all ways.
(Sorry I'm writing essays, I'm bad about that...)