Immigration officers now have explicit authority to deny entry if you have more than 2 visa-exempt entries (or “visa runs”) in a short period without a justifiable reason (e.g., genuine tourism with time spent outside Thailand). Some travelers with repeated entries are already receiving only 30-day stamps or being turned away.
I am not married but friends are. You have to take photos of being together in different rooms and outside the house. They seem to send you away if they don’t have enough evidence or when you renew again you haven’t taken the right picture.