It sounds like you are feeling undervalued by your partner. I can understand your fears around doing this.
You say some of your friends have tried this and they enjoyed the experience. Have you asked them if they had any doubts beforehand?
And just because it worked for them, it does not mean that you have to do the same if you don’t want to.
Your partner needs to understand your level of discomfort around this and I’m wondering if you have expressed this belief to him?
If something does not feel right to you, you are well within your rights to not go ahead with it.
Maybe telling your boyfriend exactly how you feel about this will help him to understand. I wish you the best with this.