I don't generally answer questions seeking wank fodder or reply kindly to statements of stereotyping. Your assumption of the women here is just as incorrect as saying that all men here are gay or all men here have big dicks.
But I'll play nice and will make a couple of statements. No, I have never cheated and never could. Anyone who has such a level of selfishness and disrespect for their partner is a despicable human being. And being on the receiving end of a cheater is not something to glorify either.
Men and women can be friends. Those who can't have platonic relationships with the opposite sex have serious issues. Those who can't trust their partners with the opposite sex also have issues.... in my experience, those who are capable of cheating are always fearful of (or even accuse) their partners cheating. That says a lot.
Whether or not women are here or have partners with big dicks generally has little to do with the fact that they wouldn't cheat or their level of sexual openness and curiosity. The women here are all here for sudden reasons. There's many a thread about that.
I'm here but I don't have a partner and I'm celibate until I'm in a committed relationship. So you can't put us all in a neat little box