Why is my sex drive so high? Or am I not as attractive to my boyfriend? Help please!?

So me and my boyfriend have been together for a year and 4 months, I am 17 almost 18 and he is 18. We took things extremely slow in our relationship (we're each other's firsts for everything & it took us 2 months to kiss and almost 11 months to have sex for reference) and honestly before we dated, I thought I was asexual as I had absolutely no sexual desires. Ever since we've had sex though, I've found myself constantly thinking about it and alwayyys wonder about when the next time will be. In June, we did it on a daily basis pretty much and he seemed to always want it & as the end of the summer is approaching, he doesn't seem to want to do it as often. Not that I expect him to want it every single day but he doesn't seem to want to as much lately. He's still extremely affectionate and loving towards me so I doubt he's losing interest or anything but I just worry that I'm not as attractive to him anymore. I feel like it's weird of me to want this more than my boyfriend. I adore him and feel bad for always being so sexually frustrated. Sorry if my question isn't clear because this description is all over the place, I just want to know why the hell I'm always so horny lmao