FAFSA marriage

As of now he doesn’t get any aid, his dad’s a doctor so he doesn’t qualify. Now that his dad refuses to pay all his income would just be going to paying for tuition. He plans on renting a room elsewhere. We’re not getting married because we want to be together forever, it’s just that even if you’re living on your own and pay your own bills you are considered dependent. Getting married is just a way for him to be considered independent in the eyes of FAFSA. And his income wouldn’t be much so i know his aid would go up since he hasn’t gotten anything in the past. I don’t plan on moving in with him. I’m living with my parents and took a semester off so I don’t have any income now, but I plan on getting another job. I just don’t want to be caught for fraud, though we would actually be legally married.