<human>: Can you summarize the given text in a few sentences?

Hey reddit, so here's the skinny. I recently found out that a girl I've been bumping uglies with has been sexing someone else while feigning romantic interest. I'm not sure how bright she is, though, because she introduced us and told me not to discuss it with QuietCrazy because she wanted to be just "one of the guys." QuietCrazy and I talked it out and we are equally shocked and frankly find it kind of funny. After regaling many tales it has dawned on us that she is not creative in the least. We both made out with her in the same place for the first time, she quotes the same movies with us, and if something works with one of us, she does it with the other within the next couple days (i.e. feeding him and I twizzlers). And this brings up the question, if she is banging us two lonely nerds, how many other guys is she banging? So basically Reddit what do?
<bot>: Cute nerd fucks two redditors behind one another's backs and they become friends, but don't know what to do 'bout girl.