I've had the same thing happen to me, only it wasn't on a first date - it was after we'd been going out for 2 months!
It was about D&D, not Magic, but the outcome was pretty much the same. We'd known each other for a year or so, we even knew each other pretty well, but the minute D&D came up she'd put me in the box belonging to the dated nerd stereotype of the '70s. Yes, really.
I've had my share of poor relationships, but this was the only one that ended not because we broke up, but because we literally just stopped talking to each other. At all. Ever.
It was about D&D, not Magic, but the outcome was pretty much the same. We'd known each other for a year or so, we even knew each other pretty well, but the minute D&D came up she'd put me in the box belonging to the dated nerd stereotype of the '70s. Yes, really.
I've had my share of poor relationships, but this was the only one that ended not because we broke up, but because we literally just stopped talking to each other. At all. Ever.