Hi! And welcome to the Kinky vs. Lover Test.
Let's face facts. Everybody's seen the poor schmuck who thinks he's hot stuff in bed... and chances are, he's not.
Most of the time when bad sex happens, it really is the man's fault, either because he's completely clueless and can't tell that she's running him an act in order to satisfy him so she can get to the laundry and dinner, or else there wasn't enough of a connection to the lady to give the sex any greater significance than ordering a cheeseburger... in which case you'd probably have been better off taking a cold shower and mowing the yard.
Oddly enough, through a ridiculous amount of flirting and straight talk, I've found that it's actually not all that hard to predict whether you're the sort of guy a lady will put up with, or the sort who wil cause a completely jaded gal to tremble in her socks like a fifteen-year-old.
So, amigo, how do you rate?
Note: I'm a straight male, and write unapologetically from that perspective: if you're bi or gay, caveat lector, but the principle under discussion is a matter of attitude, and ought to cross orientation and gender lines.