Why am I always turned on/horny???

Why am I always turned on all the time, but my boyfriend hardly is 😞 I literally want to have sex with him every time I see him. We've been having sex for over a year now, but most of the time it's me who is makes the first move towards sex. What's wrong with me? Why am I so horny all the time and why doesn't he wanna have sex all the time like me??