As a superhero people often forget there is a man underneath that mask and cape. Behind closed doors our superhero is a man just like everybody else, he worries about life in general, friends, bills, plans for the weekend, and the opposite sex.

When Batman learns that he was double crossed by Talia al Ghul, he cannot understand this and then goes on a rant about how they had sex on more than one occasion. Batman is just like any other man, but behind clothes doors but behind closed doors he is a pervert that only talks about sex.

This shouldn't really surprise anyone because he is a billionaire that can probably get anyone he wants, so his sexual appetite is probably unthinkable, and unquenchable. No matter who you are, we are all people, and we all have a weakness.