He hasn't texted back?

OK so there is this guy that I am totally into and we have been texting each other back in forth for about a month. He is always the one to text me first. So five days ago he texted me but I never texted him back for three days cause I always here about making the guy chase you and not making it seem that you are needy. So I texted him three days later and he texted back, but the next day I noticed that he didn't text me cause he always texted me in the morning to see how I am doing. So later that day I texted him but he hasn't texted back in two days. What should I do? I don't want to seem needy and text him.
He hasn't texted back?
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