I think it's fairly easy for the average man to be seduced by a "beautiful sexy woman". Men don't have nearly the experience women have when it comes to having the opposite sex (hit on them). For most guys having a "Drop Dead Gorgeous" looking woman come onto them is right up there with winning the lottery!!! LOL!
The rarer something is the more valuable it appears to be.
A guy might look at this "opportunity" as a (once in lifetime) fantasy come to life.
Women on the other hand are use to having guys hit on them (all the time). Therefore a guy hitting on them lacks the "wow factor". If a woman rejects a man she knows it won't be long before another one gives it his best shot.
Some men have NEVER been hit on by a beautiful or even average looking woman. It would be a real ego boost for them to have that effect on a woman.
Women know this and many of them will flirt with guys they have no real interest in just to get some type of advantage (a cut in line, a better seat, help lifting heavy bags, changing a flat tire....etc) They know when it comes to most men:
"Flattery will get you everywhere!"