i totally agree with this,
not just because he might not understand or be shocked by your fantasys and urges but for safety reasons too,or at least as safe as any bdsm activity can be (including light bondage) trying new things is great but if you're into anything extreme or even just a flogging/whipping etc it needs researching practice and to be built up to gradually for both your sakes.
sorry im the one being a killjoy now lol