Low sex drive ?

Cassidy

I’m only 18 but my sex drive is really low. I’ve been dating my boyfriend for 4 months. At the very beginning I was always really horny but now I’m not as much.. (I was single 6 months before dating him). Is there a cause to this? I’m really attracted to him and love him a lot. I just don’t get turned on like I think someone my age is supposed to. This happens in every relationship I’m in. It’s like the first month I always want to have sex, then after that I just only want to do that every once in a blue moon or when I’m on my period.