It really depends on the chick and how serious you want things to get. If you're looking to get into a long term relationship, then you should fully disclose everything about your life and see how it goes. If it's just a "bang date", she may be even more turned on if you tell her. Hell, she might volunteer to be video taped (chicks love that shit).
I think it also matters what you do in the porn industry and how much money you're making. If you're an affiliate barely scraping $15,000 a year, then you probably shouldn't say anything. If you're a producer or program owner making $1M+ a year, you won't have to say anything. You can tell her you shoot snuff films in your basement, but as long as it's a basement in a $4M mansion and she can drive the Lambo...she wouldn't give a fuck.
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