I love how people make "assumptions" about people on whether they sleep within the first 5 seconds of getting through the door -- or after 2 boring dates.
You can draw almost no conclusions about their character. Most people are horrible at figuring out "character", which is why the world is filled with people who hate and despise their ex's.
But wait "I thought you accurately figured them out based upon X,Y,Z tests when you met them? Yeah right.
I can draw more of a accurate analysis of a person based upon the car they drive, what they wear and their job -- then how fast they fuck.