For your own goods, better you get married first and come live in Doha with him. You will get deportation or jail if the police find out. And they will find out. Just somehow they can. And I think you can get a job easily here with your skill and experience. Do come for visit first and see Doha, I think you can get tourist visa easily with Qatar Airways sponsorship. Or you can contact Mr. Baha Ahmad in Cleopatra Travel. Maybe he can help you with sponsorship. He number: +974 5521560 or +974 4322809.

Good luck.