actually in Qatar it is illegal not only this most of the laws in qatar are only for some nationalities and u r not from the list of those nationalities. you can live any where or everywhere. I know here so many company's accommodation are where unmarried peoples r living but they all r European or American. i think you can live here as suppose to be in ur country. but be carefull with Qataris and dont make any dispute with them. wish u good luck.

Good bye