No sex

Ok so, my bf and I haven't had sex in like 7 months. Definitely not because he doesn't want to but because I don't feel in the mood, like ever. Is this normal? I feel sooo bad that im never in the mood or even get annoyed when he tries anything. I love this guy! So idk whats wrong with me. We have been together for 5 years and I have never been a sexual person but recently been more vocal about it. Im scared he'll eventually get tired and leave. Has this happened to anyone else.