Hi!
According to our lawyer, she advised us to marry after 90 days. I came to visit my boyfriend and he proposed to me on my birthday in May. We got married in June and we applied for AOS in August. Got my bio taken on Sept 13 and currently waiting for AED. I have read in some other forums that there is no 90 days rule… but we waited anyway… just make sure to apply for AOS as soon as you gather all your paperwork to prove your bona fide marriage. You shouldn’t have anything to worry about if your boyfriend didn’t come with the intentions to get married and adjust. Changing your mind is allowed!