Why won’t he admit he doesn’t like me anymore?

I have a feeling he has lost interest. He goes days to a week without hitting me up which was not him in the beginning. He didn’t talk to me for a week and didn’t apologize and quickly changed the subject and asked me to send pics of my body. I still try to see him but he makes excuses. I told him to admit he doesn’t like me but he says that he does like me and doesn’t feel like arguing.
Why won’t he admit he doesn’t like me anymore?
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