Any asexuals out there?

I have been feeling very off lately and not anything like myself. I feel somewhat lost because i'm not sure what's going on with me. I have been dating my boyfriend for a year and 7 months. The thought of having sex seems more of a chore to me than anything. It doesn't feel that pleasureable and if i do orgasm i do it by stimulating myself he doesn't cause them. I always feel so bad because i never care to have sex but he seems like he is always horny. It sounds dumb but i typed my feelings into google and it lead me to Gray A. I think this defines me but i'm not sure if i could say Hi I'm Gray A sexual. I don't know how to tell my boyfriend about how i'm feeling because he thinks my sex drive is low. But i masturbate all the time to porn or i just do it but the though of actually acting and having sex just doesn't sound appealing. Someone help me decode my feelings please!!