Waiting to have sex

Hey girls!

I’ve never had a problem with having sex early on with guys and keeping it casual, but recently I’ve been wanting more than that. I’ve never been in a long term relationship before and I know a lot of people say the key to that is holding off on having sex with your partner so that they want you more. This guy has been asking me to hangout every weekend but I’m not sure how to tell him I want to wait to have sex to make him fall for me lol. Any advice on how I should go about this? ;)