No in Turkey, if you have been married to a Turkish citizen for 3 years or more, you are allowed to apply for citizenship. I believe the first thing you need to do is pop along to the council office in the centre of Fethiye, and they will set the ball rolling for you, and tell you what you need. There is a spoken Turkish test involved also in order to obtain citizenship, and am led to believe that the process can take 8 months or more. Once the kimlik is granted, you will then have dual nationality.