I met someone in the official XKCD channel. That person referenced a private server. Later I went to a LAN party where another attendee happened to be on that same private server. I figured that had to be significant and joined the server myself. Some months later, a fluke caused my face to be displayed on a webcam feed I had linked there. My now-wife saw it and proclaimed me cute.

Really that was all it took, but she’s never since done anything that caused me to regret falling for her.