Am I overreacting?!

Ok ladies. I feel like im a bad person for thinking this way, but to me, sex is a big part of a relationship. When my boyfriend and I got together, we had sex about 3-4 times a week. Weve been together for about 9 months now, and now we barely ever have sex. I wouldnt be so concerned but he doesnt even seem interested in me anymore. There is no passion. He doesnt even want to lay with me most times or even cuddle and if he does, its because he comes to me. I cant ask him to do anything with me or he gets mad. He says that its because i have a higher sex drive than him and that he doesnt want it as much, but he used to so i dont think its just that. I dont think hes cheating on me. I just dont understand why he isnt wanting to spend time with me or even have sex with me anymore. Is it wrong that Im upset about it? I feel like he doesnt want me anymore.