Sleeping with guys without consent

So I’ve mentioned in a previous post that my bf has been into Hotwire/cuckolding for a long long time. He told me about it a few years ago and I slept with somebody else for the first time about a year ago. I’ve slept with a few different people in the last year multiple times and my bf and I both love it. I’ve noticed recently though from some of the porn we’ve watched and some of the things he’s said that he seems to be more interested in me sleeping with another guy without telling him First. I haven’t done this yet, every time we’ve discussed it and picked the guy and my bf has either been there, been listening, or gotten pics. I’m curious about maybe taking another step and having sex with somebody without telling him First. And then maybe telling him or sending him pics or something. I’m hesitant because it would be a step further than anything we’ve done and because I’m not sure if I’m the one that’s more into sleeping with other guys and not saying and I’m putting my feelings onto him. What do people think? Would other guys find that hot? Has anybody else done it?