Kinda wish the author wouldn't have made Aria seem like such a bitch. Lets not kid ourselves here, people are attracted to others even when they're married to someone they love. That part of the brain doesn't just shut off the moment you find your soulmate and anyone suggesting otherwise is either lying or delusional. Even our cute heroine points this out herself and that the goddesses are just being extra strict on her.
They could have made Aria's situation more of a passing fancy and still got her punished for the same in-story reasons as now, but they blew it up and made her character seem quite vindictive about the whole ordeal. Pretty sure Sauvel just wants his wife and child, saying he believes in her, but to everyone else, that pretty ugly display looked more like "oh okay I'll avoid making a legit pass at bro-in-law 'cause otherwise I'm actually gonna die" not because "I genuinely love my husband and wouldn't cheat on him even if his bro is kinda hot".
Rather than Sauvel having a comedy makeover and getting the attention of all sorts of girls, not making his actual wife seem like a whore in the first place would have been a nicer move, seeing as, you know, she was put in the story as his actual loving partner in contrast to the abomination he was technically married to..