Simple counter-question: How do you define "sexual harassment"?
Because that's the actual issue these days. Behavior that used to be "normal" and lead to people getting to know each other is considered "harassment" these days.

Yesterday I read an article about Tinder in the German Cosmopolitan: http://www.cosmopolitan.de/dating-app-tinder-tinder-im-test-...

One of it's points being that a big draw for many women is how they like being "admired" by so many men on Tinder in the same way they used to appreciate being catcalled: "Es ist dieses dauerhafte Umgarntwerden, das den Reiz ausmacht. Wie früher das Hinterherpfeifen oder Zuzwinkern.

So what's the message here? What is a single male supposed to do in such an enviornment? Some women like the catcalling, others consider it harassment.
Meaning: The saver option is not to catcall, but that also results in vastly reduced chances of getting to know any woman at all.
Especially when the "competition" does not bother at all and just keeps on catcalling and thus actually ends up getting to know new people, while you sit in your misery alone thinking "Well, at least I didn't harass anybody.." hell of a good time!

Then there is online dating, which has it's own slew of massive issues as a single male. Competition is extra fierce because on these platforms quite often men outnumber women 2:1 or worse. There you might not be called out for harassing that quickly, but there you need a harassing like behavior to be actually successful. You need to be somewhat dishonest about yourself in your presentation, you need to approach/contact as many women as possible (while disregarding their plight of getting spammed), to increase your chances for a successful reply and meeting.

All these are things "we" are supposed not to do, yet they seem like the only viable tactic to any measurable "success".
Nobody is gonna start a relationship with me because I'm just such a nice guy who didn't come on to her, those are exactly the kind of signals that keep you in the notorious "friend zone" for all eternity, but those are the kind of signals that are seemingly expected from males in any and all situations or else you might be considered a "creep" or a "harasser".

This get's even worse when culture actually adapts. Not too long ago a common complaint would be how "Men always feign romantic interest to get sex", true enough. Now increasingly men (and some women) have become more pragmatic about this and state their intentions in quite a blunt way and guess what? That can quite easily also be interpreted as "sexual harassment" when somebody comes on to you with "I'd like to have sex with you".

So what's a single guy to do? Especially when you are also lucky enough to be on the spectrum and have a hard enough time parsing social situations already, this constant ambiguity makes it an impossibility to improve my understanding about social interactions and dynamics, literally paralyzing me.

I'm in my mid-30's and I've given up any intend to actively look for a partner because I don't want to inconvenience anybody with my failed approaches or end up being seen as some kind of "creep" who "harasses" people and makes them feel uncomfortable, when that's actually the exact opposite of my intensions.