When I have sex I feel nothing

I have been with my boyfriend (my first partner) for a year and whenever we have sex, I feel nothing. I get aroused but when it comes to sex it isn’t pleasurable at all. I like being intimate because it makes me feel close to him, but I feel like I’m missing out. I’ve explored on my own and i still feel nothing. I feel like my body is broken. I don’t know what to do or who to talk to about this.