Adnan, as with just about everything there is a double standard. There are a few instances where Qatari women have married non-Qatari men, I know personally of one such instance (he is an American convert).

Qatari families are not happy when their sons marry non-Qatari's, and this instance with girls is a little easier to regulate than with the sons, I think you know where I am going with this. I have been here in Qatar a loooooong time and seen a lot of things :)