Sometimes when a woman on the internet shares her experience with DV, there will often be a bunch of incels in the comments gleefully assuring her that 'you probably weren't innocent either'.
Well if that's true, then the same applies for men who were cheated on by multiple women. From an evolutionary perspective, women have a lot less of an incentive to cheat, especially if when their man is a genuinely good guy whose presence in her life is one that she stands to benefit from keeping around for as long as possible. Which is why any guy who's complaining about how 'women always cheat' and using his own dating life as an example, is admitting to having made a habit of emotional abuse.
It's important to keep in mind that emotional abuse is rarely taken seriously. Abusers know how to shift the blame, be calm and collected when facing others, while their abused partner seems emotional/understandably shaken. He can shift the blame to her and just say that she's crazy. And when there's no actual physical violence involved, she's most likely been told by others in her life that whatever he did isn't worth ending the relationship over, regardless of how shitty it made her feel.
So when you feel too attached to end the relationship (especially when your partner has done such a good job of convincing you you're worthless and can't do better than him) and too powerless to match his energy in the heat of the moment because he might escalate the situation and hit you, secretly cuckolding the bastard must seem like a great low-risk way of getting your lick back and maintaining some semblance of dignity.