Is he treating me bad? Even though , I am agreeing to have sex with him?

I'm 18, and I'm sleeping with a guy whose staying with another woman. And Yes, they're both years older than me. I don't know her, but he did tell Me about her. Anyway, every night around 11pm , I would call him to come over to have sex with me. Then after we're done, he leaves. He don't... show more I'm 18, and I'm sleeping with a guy whose staying with another woman. And Yes, they're both years older than me. I don't know her, but he did tell Me about her. Anyway, every night around 11pm , I would call him to come over to have sex with me. Then after we're done, he leaves. He don't even buy me anything. Just strictly sex. I really do like him but I don't know if he feels the same way. All I know is we're having sex. Is he treating me bad, Even though I'm agreeing to have sex with him?
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