Sexy pictures?

So my boyfriend and I were talking the other night about things we'd been given by exes. And somehow we got on the topic about nudes/dirty pictures. I've never sent or taken those kinds of pictures before and he's never received them. But I got the impression he'd like them. We've been together a while and I trust him completely. I know he wouldn't spread them around. So I was wondering if any of you ladies have ever sent them? If you have do you have any advice about sending nudes? Should I send them? Or should I talk to him about sending them before I do?