Ooh, usual problems of women who cannot be married by the Muslim guy because of the tradition. Thats the reality, even if he is already serious with you, take into consideration that love is not enough, nor his sincerity because in the end he must follow the tradition. Thats already his mindset. Its up to you to risk being hurt. Life is short, you may be hurt or not hurt by serious or not serious guys. Get into the mind and the end goal of the guy, hope both ur goals in life will meet.