Re: Was Quark ever married?
And he was temporarily married to that Klingon woman, which I forgot in the original post. He seemed too lecherous around the ladies to be in the closet though. Though he did seem to be fascinated with Odo. There's probably a lot of Odo/Quark slash fiction out there.
Dr. Howard, Dr. Fine, Dr. Howard: For duty and humanity! --Men in Black (1934)