I (18f) want to go all the way with my boyfriend(20)

So we met and instant connection. After becoming what I can confidently say as best friends and me thinking I’d ask him out in December, he pops the question. And this was about a week and a half ago. He had an aversion to sex due to his previous relationship, but judging by the back of his car and what we’ve done, he’s open to having sex with me.

I had a ex that I wasn’t fully attracted to before him, and it made sex not as great. He also would push me into sex. But with my current boyfriend and I have insane chemistry as people, friends and judging off our only 2 encounters, great sexual chemistry. We did all of the talking as friends, going so far as to talk about how much we loved each other in a super platonic sense and how important we were as friends. And we still have that friendship, but apparently he made me realize I have a higher sex drive than anticipated, and by a lot.

We’ve talked about sex. We haven’t gone all the way, but we got as close to the line as we could, and even that felt more sexual than anything I ever did before. It is a weird situation because I keep wanting more. The more we do in the relationship the more I can stop imagining what it will be like. So I want to go all the way because I trust him, and for my own selfish reasons, it’d make me stop thinking about what it will be like. But as fun as his car is for a not so quickie, I want it to be something that’s a little more intimate. Considering I haven’t even met his parents, and we can not do it at my house, what should I do. Or how to I ask the most awkward question ever.