Is this sexual abuse?

When I was 11 I met this guy who was 24 years old online. He made me believe we were in love and he was my boyfriend. We told each other everything. He started asking me for nudes and videos but in a kind way so I did. He exposed me to child porn ( which I didn't know at the time) and himself. As I got older I realized those were children he was sexually abusing. Thats why he sent me plane tickets so I can meet him. He used to try to convince me to runaway so we could be together. Those kids fell for it. And now I want him to pay.
Is this sexual abuse?
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