I sent photos of me in underwear (no nudes) to my best friends boyfriend, and now he is asking me for nudes?

I have been sending him photos of me in underwear to my best friend boyfriend for a month (he hasn’t screenshot or saved any photo) today he asked me to sent him nudes, but I don’t want because he could screenshot them and they could bully me, friends in my school (btw I have 15 years old)
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+1 y
I know I am a shitty friend😭😭 but, my BFF have betrayed me a lot of times
I sent photos of me in underwear (no nudes) to my best friends boyfriend, and now he is asking me for nudes?
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