I met Jo via the guitarist of the band I was in at the time, she's his cousin and came to one of our gigs. She was only 15 at the time and I was taken so didn't go any further, but a few months (and a birthday and a separation later!) we met up again when the guitarist threw a halloween party and she was there again. We hooked up and got married 7 years later.
If I was single now I'm really not sure how I'd go about trying to meet someone, can't be bothered with trying to pull in pubs or bars and interweb dating doesn't hugely appeal. I'd probably just be happy to stay single and if someone fell into my life then great, but no worries if not.