If someone cheats on their partner with a single person, I don't think the single person did something wrong. I think they did something that's morally questionable and I'd not be able to do it without feeling bad, but I don't think they're the ones to blame for it. I see so many girls or guys who hate on the other girl or guy and even attack them, but don't even consider that it might have been their own partner who did the wrong thing. No matter how much the other girl tried to seduce your husband, if he gives in, he's the pig. It's not her responsibility to make him stay faithful.