how do I let him know that I'm not ready for sex, while still keeping him interested?

Hello! 20/m/australia herewent on a good date with a guy the other night and we were talking over Facebook last night about a second date. he was a bit tipsy so was saying stuff like "I just want to kiss your face" etc, cute stuffThen he said "so on Tuesday night (the night we said we'll go to an art gallery we're both interested in) I'll kick my roommate out?" and I may be innocent af but I'm pretty sure that shows he intends us to have sex (he also asked if I was a virgin just before that as well)I like him but we've only been on one date - I've never even had my first guy kiss yet, I'm definitely not ready to have sex with him but I want to continue to date him and see how things go. how can I communicate this to him (keeping in mind that I am an awkward and v innocent guy)sorry for poor formatting, on mobile