Sorry hun, still you don't know until you try. And hey you had a fun time out.
Sometimes that's all you get.
In my response to yagr, theyr are not my standard rules for dating.
But they are absolutely my rules for online dating, for very specific reasons.
Men and women view online dating very, very differently, neither is wrong it's just a totally different perspective.

Guys view it more like a take away menu, you don't know If your really going to like it til you try it. They rarely assume that what is on the profile is what they are gonna get, and often they aren't that bothered.

From y experience women on the other hand pick apart these profiles like they are a given, and even a reply seems to count as some sort of agreement things coulda progress. They also seem to think that knowledge someone for 3 weeks on line counts toward knowing them in real life.
As I said neither is wrong, it's just a very basic mis communication.

Real life dating is different, if your spending real time face to face its easier to get a read on someone.
Have I slept with people on a first date, absolutely.
Have I ever slept with someone I didn't know in real life...never.
And I have also never been dumped after sex.
I don't think this is a coincidence.

I am never judgmental in these things, me and my current partner has the weirdest start to our relationship. Couldn't have been further from conventional.

But I have seen many food role get hurt, when a little common sense would have gone along way.
All the best to th OP.
His lost hun, not yours.