All women who have joined gaming groups in which I have been a member have been treated in one of two ways: (a) indistinguishably from the guys or (b) with a kind of sick cloying deference. I have never witnessed or heard of through any real-world acquaintance of the kind of experience you are describing. I would like, therefore, to suggest that the individuals with whom you are interacting are highly exceptional in the gaming world. I've seen guys refuse to take on a female player because the particular gaming group has a "guys' night" kind of feel to it but these are never the bona fide geeks to whom you unfortunately seem to find yourself attracted.
My advice: you and your boyfriend can/should find any other group of male gamers and they will act differently.
My advice: you and your boyfriend can/should find any other group of male gamers and they will act differently.