Accused of sending nudes to someone else

So whenever I’m away from my boyfriend he asks for Nudes and I have done it before but now it just bothers me. Why is it that he can’t respect that I’m saying no?

He gets upset with me and then he tells me it’s cause I’m hiding something because a while back he started doin some “investigation” work on his phone and he found a picture of a naked girl and he came running down the stairs and snatched my phone from me and I was just like okay? I wondered what he was doing and he just sat on the couch using my phone and then he looks at me and he’s like do you have something to tell me and I said no....

only thing I could think of what was happening what that my best friend decided to message him saying that I no longer want to be with him or something along the lines of that but I told my BFF not to say anything and I trust her with that

So back to the story...I forgot how the order of events went but he showed me a picture of a girl but you can’t see the face and hes like why are you on a website and having guys talk about you

And I’m like what? And go to grab for the phon but he doesn’t let me and says yeah you herd me. Then starts questioning me who I sent the pics to

I told him you’re the one and only person that I’ve sent them to. He didn’t believe me and starts going through my phone again and he literally kept it for like an hour and a half trying to find anything but there was nothing! He even went as far to call me a slut and I kept telling him I didn’t send anyone anything

At this point I was just like traumatized with the whole thing because even I had to admit that the girl eerily looked like me only reason I knew it wasn’t me because of the mole on her stomach and I have a pretty hairy stomach along with the way her breast were shaped.

To this day he still believes that I’m hiding something from him because I no longer want to send nudes and I don’t want him taking pictures of me....but even from the beginning I was hesitant to do them but he kept asking and I would always give in.

It’s like I don’t want to give him any reason that I would send or let anyone take pictures of me even if it means he can’t take pictures either.

He’s acts just like a kid that doesn’t get what he wants and it really irritates me.

I don’t know what to do about it