How do you start THAT conversation?

Natalie
I really don't know what to call it, but how do you talk to a guy about how far you're willing to go? I'm 17 and don't have much experience with relationships or even kissing for that matter. I'm a virgin and plan on remaining one until I get married (he knows that) but he has had sex with multiple girls, so how do I tell him just how much he CAN do/touch? Also, we're not actually in an official relationship and I don't know if we ever will be, which I feel like that would make it even more weird?