Sexual fetishes and fanasties. What's yours?

So I've always been open to new things. I have never been tied down, whipped, had a gag ball in my mouth..really anything besides vanilla sex. I have always want to be handcuffed and whipped and choked during sex. Just the thought of a man I love and trust being in control and causing me both pleasure and pain turn me on. My fiance and I discussed that since I was so willing with trying anything that the next time we have sex he's allowed to do what ever he wants to me.. anything he pleases and I am to not get mad or upset with him. I'm too nervous to make the move myself with that kind of stuff because I don't want to "mess up" or "ruin the mood". What are you guys into or want to try with your partner? Maybe it'll give me and my fiance some ideas.