I had a moderately similar, but from the other end, situation. Simply enough, you do need to talk to him about it. If youve been together for 6 years, I believe that he will be willing to learn this, at least slightly, to make you happier. Do not under any circumstances even imply "well if you cant do it...." I know, patronizing and obvious, but still. Otherwise, Oz always has great advice and I agree fully. If you talk and he seems intrigued, might take a quick minute, I know the first thoughts into my head, the first time I saw anything BDSM were..."thats sick" ....lol kept looking though, and here I am. It takes a little bit with societies norms to accept it and appreciate it. but take time, talk to him and just...be patient, I am sure it will all work out. Ive been through rockier situations with my girl now, and my ex. and...simply enough. you can find a way.

Good luck.