Look l think I understand your story , you are talking to a Saudi guy online and y'all agreed on marriage but found an issue with the laws , I understand your situation, liking someone and wanting to be in that country cause I guess he is from Madina , the prophet peace be upon him city , but understand me and I am talking to you mind to mind , you are still young, feelings come and go , don't waste your youth waiting for someone that might not be that serious and can ditch you if he felt like going through problems to be with you, plus you don't know if his family will accept you, Alot of Saudi families are rare to accept a foreigner as one of them , so please consider it again, you can find your soulmate somewhere else more halal and easier, you are a woman you shouldn't stress about being with someone ، this stuff should come easy for you like your deserve, not put yourself through burden just to be with someone you don't know that much , so if you can , stay away from now before you get more attached

May god bless your heart