Should I reach out or not?

i’ve been seeing this guy for over a month. we text and call consistently hang out two or three times a week and definitely have expressed interest in each other. Last week we ended up having sex, after he wanted to get dinner but i had to leave so i declined. We talked normally on the phone throughout the day on Monday and Tuesday but after i didn’t respond to his message Tuesday night (nothing wrong just didn’t warrant a response) he hasn’t reached out. it’s Saturday now and he still hasn’t texted or called me since Tuesday did he lose interest in me? Is there a way to gain it back? i actually liked hanging out with him :(
Should I reach out or not?
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