I reconnected with one of my best friends from high school in our early 20s. He had found some people online who were interested in starting a hackerspace, and they met weekly for several months at a coffee shop and raised money and made plans. I went to their opening night party (where the mayor "cut the ribbon" which was actually a chain with a blowtorch) and liked the space, so I started attending some events.
Eventually they offered me a basically free membership, because they were trying to attract more women members but knew it would help to have some actual women around first.
I don't remember the moment or day I met my husband, only that he was around the space a lot working on electronics, and I thought he was cute and admired his focus. One day I sidled up to the electronics bench and asked flirtatiously what he was working on. He assumed this meant I had a deep interest in electronics, and went on to explain many details of his project that I didn't understand whatsoever.
Time went by, we hung out at the space more but always with other people around, often until the wee hours. I invited him (and a couple others, but mainly him) to a Halloween party a friend was throwing. No response. I repeated my invite multiple times over a couple weeks, casually inserting it into conversations. No response.
Finally, the day before the party, I stalked him online, found his facebook, and sent him a facebook message with my number, saying basically "in case you change your mind..." No response.
The night of the party I got a call while I was getting dressed. It was him, and he said "I'm ready to go now." I picked him up, we went to the party. Two months later we moved in together. Three years later we got married.