I Pretended To Email A Guy's Coach And Now He's Threatening Legal Action.

Location: North Carolina, USA

A guy (19) messaged me (17) on Instagram two weeks ago. He sent two messages, one saying hello and another asking if I 'send.' 'Sending' means sending nude images. I was offended that he had asked me to send him nude images immediately and because, in my opinion, nothing on my page indicates that I'd be the type to send images like that to someone, especially a person I don't know. I saw that he had posted his college in his Instagram bio and that he played a sport at the college. I took a screenshot of his DM and attached it to an email I drafted to his coach explaining that I found the guy's message to be offensive and asked if he was okay with his college-aged players asking high schoolers for nudes. I never sent this email. I took a screenshot of it and sent it to the guy, who then blocked me.

Two days ago, he messaged me from a different account saying he was going to pursue legal action because my fake email had caused him to lose his position on the team. He said that he'd gone to his coach and tried to explain the email before his coach asked him about it, but since his coach had never received the email the guy confessed to asking for nudes from a senior in hs for no reason. His college does a program where athletes can assist with k-12 teams for volunteer hours, and apparently he'd been assisting with coaching a high school girls team and his coach had temporarily removed him from that position. He claims he is going to sue me for the damages related to his removal. Could any legal action he brings have any basis? Or am I actually at risk for being sued for this?

EDIT: Thank you all for putting my anxiety to rest. I'll talk to my parents about it and get in contact with the police. I actually wasn't aware that his request for nudes would be considered CP solicitation since I'm above the age of consent, I thought it'd just be clearly very weird but not illegal, so that's good to know.