Paris universal gay sex: Not just about sex

Talking with a straight friend (yes I have a few of those), he told me how surprised he was to learn that sex can be so easy for gay men. Apparently, he was walking with a gay friend when a man passed them going the opposite direction and looked meaningfully at his friend. His friend stopped, turned to look back and made a beeline towards the guy who had also stopped and was standing in front of a store. They exchanged phone numbers and that night they slept together. End of story. I was surprised that he found this situation surprising considering that he has a few gay friends.
My (het) friend’s story made me think. Gay sex ritual seems to be universal. When I first came to Paris, I might have had problems talking to people (due to not speaking French well), but had absolutely no problem finding men to sleep with. I just did what I had always done in Melbourne or in New York or in Los Angeles. The meaningful eye contact is a universal language that traverses cultures and colors to reunite two men in a bed (or a bush). This seems to not be the case for heterosexual ritual. For example, how a man looks at a woman that piques his interest could lead to different interpretations in different cultures (appreciated in one culture and considered as extremely vulgar in another).
Second, this confirms that we (I mean gay people) think of sex differently to our heterosexual cousins. Sex is not an end that one gets to by means of getting to know each other (as my het friends seem to think). Sex is getting to know each other, a first baby step to getting to know the other. In cases where this babystep with a man is enough to make you burst out into a song, well maybe we would invest in the next steps such as drinks, dinner and a movie with him. The mystery of course lies in what one can discover in his heart and head ….uh, let’s just say that these are the more interesting mystery boxes to discover at the end and after investing the time and energy than what a guy's pants contain!

Applying psychology to compare dinner-sex or sex-dinner :
Sex as an end implies that once you have sex with a guy he won't be interested anymore in dinners and conversation that merely were means to get to sex!
With sex out of the way, I think people are more inclined to be more honest. With sex hanging over you (so to speak), the guy will probably pick and choose (or worse yet, invent) what he says to bring him closer to your bed. (Like being good before Xmas and once you get your present, well...)

Hints for heterosexuals:
I can come up with nothing, sorry !