Yes.
When I was 15, I had nudes of a 17 year old. Age of consent is 16 in the UK but sexual images of people under 18 is illegal.
Having that content was illegal; and I have the criminal record to prove it.
Did you have those nudes with the consent & permission of the 17 year old in question?
Is there more to this story than you are letting on?
It's bonkers. But it happens. Unfortunately all of this has become something of a taboo, but teenagers having sex is ... kind of normal. What exactly is and isn't acceptable is very hard to decide as a general matter, and far too often any conversation is shot down with "pedophile apologist!" or, in this case, baseless "you must have done something wrong!" assumptions.