Hey there Jules!
Well, the one thing that I can tell you is that if your boyfriend wants to go further and you're uncomfortable moving it to that point, I would suggest telling him that you're not ready to go further yet. However, if you feel like you want to go further and you're okay with that, then by all means, go for it. I'll just give you a heads-up though: make sure that you know what you're doing and what you're getting into. I wouldn't suggest doing something that'll end up getting you facing consequences in the long term, but just an FYI and a friendly reminder.