How do I deal with a lying boyfriend?

I told my boyfriend that I’m not cheating on him because any guy would know better not to have sex with someone autistic and he said no they don’t. But guys don’t talk to me when I tell them I have a disability and refuse sex with me because they have misconceptions about me when I try to have sex with them so he lied right to my face and always thinks I’m cheating on him when I am not. Why is he wrong and lying to me?

How do I deal with a lying boyfriend?
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