Feeling pressured to send sexual photos
So I met a guy online a little less than 2 weeks ago and things have gone sexual very quickly. The thing is, I like most of it. We get flirty and turn each other on through sexting, which I'm comfortable with. I have also masturbated after some of our exchanges, so I'm definitely into it.
But In terms of sending photos, the only thing I've been comfortable sending him is pictures of me in a bra and the only thing I'm comfortable being sent to me is him with his shirt off. The thing is, right away when we started talking, he sent me clips of porn and explicit pictures of people having sex. I told him I wasn't comfortable with that, so he stopped sending those and said he wanted to make sure I was comfortable and that we were both having fun. Even though he said this, he's still been very pushy about me sending sexual/nude photos of myself and offering to send nudes of himself. I've already told him multiple times I'm not comfortable with that. But now he's getting more impatient saying 'Come on, you've already touched yourself thinking of me' or 'It's fine. It's not like I'll send them to anyone'.
Anyway, I feel divided about this. I enjoy talking to him and getting to know him more. I even enjoy the sexually charged conversations and sending him photos of me with a bra on. But I'm not comfortable sending nudes or receiving nudes and I don't think he's actually respecting that despite saying he wants me to be comfortable. So I'm just trying to figure out what to do. Should I try to talk to him again about my boundaries? Should I stop talking to him? I would appreciate some advice.