Sometimes really bad stuff happens that is just really bad stuff in a marriage, not fraud. My ex (who came over on a K1) accused me of cheating on him and moved out, when in fact it was the other way around. He cut off my access to all my funds (I was only an authorized user on his credit cards) and pretty much emptied our one joint bank account. He was an abusive monster. But we entered our marriage in good faith, it just ended poorly. He applied for citizenship soon after he left me and I was ecstatic when he was sworn in because it was another tie between us severed. Believe me, when all this went down, everyone around me started accusing him of fraud, but it was just a bad thing that happened.
Also for it to be polygamy, you have to married to more than one person. Being a polyamorous person isn't a bar to becoming a citizen.
We filed our i130 back in April and we’re trying to get everything together for the rest of the AOS package including the payment. On June 17th our i130 was approved, can I still send in out AOS? We didn’t think we would be approved so fast. We also needed to take time because my husband lost his job and we were really tight
on funds until he got his new one.