Yeah, which means that it's a lot more likely for there to be cheaters among the men on that dating site, rather than the women.
I agree with the fact that a woman in general can find a sexual partner if she wants to, whereas for a man it's more difficult. I thought we were talking about more women than men being cheaters and having "other men" on the side. That is false, I think it's 50/50 or if anything, there are more men than women doing it.
Also, it is not the case of OP. In her case, she and her boyfriend are in an open relationship.