Did you meet your significant other while playing D&D? Does he or she still play?
Well, that would be quite a story, wouldn't it? But no, I hadn't played in several years when I met my future wife on a social networking site in 2008. She did know I was (and still am) a bit of a nerd, considering that she was well aware of my interest in economics and my aspirations to write and publish fantasy novels, and also made a point of asking me not to talk about zombies when I met her parents for the first time. With all that stuff in my background, D&D wasn't a surprise to her.
It turns out, though, that when she was a kid, a few of her cousins used to shut themselves away in a room together and play D&D. She knew very little about it, but was interested enough to join the group when I started running a game for my brother's family. So we have played together, and probably will again in the future. I couldn't ask for a better match than that.