You haven't lived until you've gotten head while triple-killing with a frag nade in Halo. If you've gotten head while your team scored a winning run/goal/touchdown, that's a close second.
Other than that, she's still talking to you. Introduce her to your hobby and show her things she may like... You'll probably be surprised. For my ex-wife, it was Blue Dragon (though she had gamed Civ, EQ, and a few other things mildly before that point).
If she's open enough to gently poke fun of you for it, chances are she's interested in what you're doing. Not that she will learn the intricacies of the "drop grenade on death" option in CoD4 but she'll appreciate the time spent if you sat her down and played LBP or a handful of PSN/Live games with her for a few hours. Remember, she just wants to spend time with you (well, so long as she's not a total cunt) and just enjoys being around you. Women tend to be like that.
PS. Don't be a twat. You will have to play down to her level for a bit. Be patient and never get frustrated.
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