I can’t find what makes me tick and my bf wants to…is there something wrong with me?

My bf and I started dating at the end of October of this year and our first time was the 2nd week of November and ever since then we’ve had sex a couple of times a week. I can get wet and enjoy the sex but I’m not very experienced…he says that he’s found some little things out that gets me going and makes me tick and he’s very proud of himself haha. But, he still wants to try and find the big thing that makes me tick and we both can’t seem to find it..I’ve been really stressed out and I’m not experienced enough and my brain keeps telling me that he will find something he doesn’t like or that I will find a way to fuck it up. Am I doing something wrong? Or am I broken? My sex drive is low and I also don’t know how to change that. What’s going on?