Just a thought. It isn't just the "labels" for someone's sexual orientation. It's people cheating. It's people likely not using protection and STD/sti being a risk, especially since the women who are being cheated on, more often than not are trusting to monogamy and may be fluid bonded with the dude.
It isn't just or always "oh the woman doesn't put out enough" or "she doesn't suck my cock enough". It can blatantly be people who are closeted, and whether or not they have a fulfilling sex life with their partner, it's repeatedly choosing infidelity. I see multiple people in here talking about swallowing, sucking someone off with no protection, about having a dozen or more men they have variations of unprotected sex with...
I've been the woman who was cheated on.. And this was with a partner who didn't keep up with my libido, and I've always enjoyed giving oral sex. Often, even. Instead, he lied about being curious, lied about if there were any things he wasn't getting that he wanted to try (including being non-monogamous), and put me at risk when he bare backed someone then came home and fucked me.
So, labels aside, unhappy sex lives at home aside, don't assume it's always the woman's fault, or ignore how fucked up what some of you are doing is and enabling it is...