So, I have a mutual crush who I've known for a while now but we've only recently confessed that we like each other (Jan 2nd, 2021). We haven't started referring to each other as if we're in a relationship or anything yet since neither of us feels like we're in a place for that now, but we flirt and talk about stuff, and he's very understanding and supportive (even of me being non-mono, with the possibility of me wanting to date people in addition to me in the future), and I feel like I can be myself with him.
Anyway, we're both underage, but I manage a small Discord server where I allow people of all ages (so long as they're 13+, which is required to make a Discord account) to discuss things about sexuality, with lots of rules in place to keep things appropriate while making things fair. As such we discuss sexual things fairly often, as masturbating and such are healthy parts of our lives, despite us both being underage (I'm 17, he's 15). We only get to communicate online though since he lives in the UK and I live in the USA.
We both have... unorthodox sexual interests, though his are generally less inherently sexual than mine (I won't say them here because privacy, but think like, feet pics or whatever lol). I was wondering, what are the laws (in the USA) about like, pics of minors that aren't explicit but are used for, um, sexual purposes? I know it would be hard to define since technically anything can be used as masturbation material, but laws can be weird like that. I just don't want to get either of us in trouble, even though I love him and he excites me.