Well, as long as you are not more shocked about your findings than for you to actually keep thinking about going into some of it, I'd say you guys definitely have some talking to do
But as others have mentioned - give it some calm and thorough thought on your own first - among the kinks he's into, what could you imagine yourself a: Enjoying, b: accepting, c: Have a real issue with....
Hopefully they will all be "a"'s or "b"s, but considering that question is probably a good step for you to make and sort out for yourself before moving into conversations with him about it.... Never the less tho, be open to the idea that his kinks and interests may have a somewhat different meaning/extent than your current perception might be, and therefore your acceptance levels or own interests may also be subject to change once you start talking to him about it.
Or of course... there's the completely different option of not talking about it initially at all, but carefully start working some of the kinks into your life - if you are sexually active that is (doesn't really sound like it, but not want to pry either)