If you are dating him for almost a year you already know a lot about him. I read somewhere that according to muslins traditions they don't date as that concept don't exist in their religion if they want to be with a girl they just marry her, but times have changed and maybe he has acquired some of your culture. Even though there are some questions that, in my opinion, you need to ask yourself and maybe to him too, mainly related to religion as his religion allows marrying with more than one woman and wives are frequently seen as husband's property. I think it is also important to know if he wants you to convert to islam and if it is your will doing so. I believe that even if he is loving in many aspects, he will want to have a wife according to his patterns and that will affect you for sure, you just need to know if you want to change to live your love with him.