How could I give in to her needs?

I recently got married for the second time, and my new wife has suddenly showed a new side to her personality which I did not know existed. To be honest, I am quite a free spirit when it comes to sex. I have always used the services of Croydon escorts, and enjoyed all my experiences. Most of the Croydon escorts I have dated have been very nice and I suppose you can say the sex has been quite “straight”. I met my new wife on a flight from New York. We both work in the petro-chemical industry and we seemed to hit it off straight away. She seemed like a normal sort of girl, and she did have the most incredible body which I just couldn’t wait to get my hands on. You can say we had a bit of a mad love affair which ended with us getting married three months later. I decided to tell my escorts in Croydon that I could not see them anymore. It was a bit difficult but I was by now enjoying quality sex with my new love interest. She was just a normal sexually active person, so I decided to not tell her about all the Croydon escorts who I used to spend time with in case that would damage our relationship.
Help! My wife ties me up
After we came back from the honeymoon, my new wife asked me if I wanted to try something different in the bedroom. I asked her what, but all she did was to tell me to come upstairs in a few minutes. After about five minutes I went upstairs, and got the shock of my life when I entered the bedroom. My wife was sitting in a chair wearing a skin tight black suit twirling a pair of hand cuffs, and they were not the fluffy the variety. She gave me an ice cold look, and told me to take my clothes off and lie down on the bed. I had never experienced anything like this before even with my Croydon escorts. My new wife came over and started to tie me up. She explained the reason she had wanted a brass bed frame was so she could tie me up.
This is too much
I don’t mind a little bit of bondage but this is too much. My wife is really into bondage but I feel that I lose control when she ties me up. She even has a whip which she threatens me with if I don’t do as she says. Some of my Croydon escorts did use fluffy hand cuffs once or twice, but it was nothing like this. This is an experience which I am not comfortable with, and I don’t know what to do. I appreciate that my wife gets a lot of sexual satisfaction out of this, but I can’t say that I do. Most of the time I am terrified just because I feel so out of control. The problem is that I love my wife in many others ways, but I do not know how to tell her that I am not that much into bondage. I have suggested that we perhaps start to explore other sides of both our sexualities but she loves to be sexually dominant. It is a very difficult situation, and I don’t know how to approach this part of our lives together. It is a genuine problem which needs to be solved but I don’t know how to solve it. I have thought about becoming more dominant in our role play, but I have always been kind of submissive. Perhaps my wife could sense that I was a submissive person, and she wanted me as her husband and sex slave.