It was pretty simple to explain to my now wife when we were dating. I love games, I buy all the games I'm dying to play but with work and friends and whatever, I just don't have nearly as much time to game as I'd like. All dead true. In one sentence it explained that I love gaming, but didn't put it before everything else. She was cool with it, and challenged me to some VF2 when we got back to my Apt.
Bottom line is she's super cute and super cool and had no problem with it. Well when she saw 2 lightguns and a wheel, she admitted that would have been sort of a red flag, but she let it slide because she got to know me better.
Bottom line is life's too short to pretend you're someone else. My wife accepts the games and enjoys them. Her younger sister is pretty hardcore. I notice that my younger sister and my sister in law are both much more serious about games than older women. It's partially an age thing. Plenty of cute girls game. I bet most CAGs are younger than me, so really, you should have little to worry about.
If you want to play it safe, just hit on the hotties wearing NESbuckles. But they're probably already taken!