You're extraordinarily judgmental of people you don't know, especially for someone young and relatively inexperienced.
And no, it's not "bending the rules." If I am just dating, and not exclusive, I'm free to do whatever I want. So is she.
And yes, Starnique, I'm cool with whatever girl I'm dating doing what she wants with whom she wants. It's not my place to question what she does when we aren't exclusive. And it's not her place to question what I do. If she wants exclusivity, she can ask for it. I'm free to accept or decline.
There's an awful lot of vitriol coming from the women on this forum lately.