How long to wait to text after a hook-up?

ElectricRx
Ok so I met a guy a few weeks ago. I just got out of a long serious relationship, and just looking for someone fun to be with, Long story short, he does not seem to be interested in anything too serious either (due to current obstacles also). Anyways, we agreed to meet up for a casual hookup after just one sorta"date." It was fun and intense. We both are really casual and comfortable with each other. So he texted me right after our hookup and then again later on that night to see how I was doing at work. The next day, I didn't hear from him. However, I would like to indeed have future hookups with him! And no, I don't plan on marrying this guy but I did have fun.
So I am wondering should I wait for him to text again, or should I take the plunge? And if so, what should I say and how long to wait? I don't want to give him the impression I'm trying to become his gf (or that I am desperate). Thanks!
Updates
+1 y
thanks for the advice everyone. Yes we have been currently hooking up, and we are having fun. Just as it should be ;)
How long to wait to text after a hook-up?
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