how to keep a guy interested after sex !????????

Em
I had sex two nights ago with a really nice boy I have been talking to for about a month on tinder
We were both pretty drunk but he was sweet and I'd like to get to know him better
He sent me a 'thanks for having me' text after he left and 'another thanks for having me' the next morning and we had a brief chat about what we were doing that day. 
However, he hasn't talked to me today 
I don't know if I'm reading too much into the situation but I usually wait for him to message/ text first
I really don't want him to root me and boot me but no idea what he's thinking 
What's the best way to approach ?