I'm confused on what to do. What should I do?

I'm 18 and I have a boyfriend. He's been so nice to me. He recently traveled out of town with his parents and we've been texting over the phone. Today he asked for pictures of my body and I told him no because I didn't feel comfortable with that die to the emotional trauma of being sexually abused by my ex male best friend but he still insisted. I told him no and he told me it was okay and that he didn't need anything anymore. He stopped talking to me afterwards. Is he angry or what?
I'm confused on what to do. What should I do?
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