He intentionally takes a long time to reply to my texts sometimes. How do I deal with him?

He's 34 and I'm 24. I've noticed that sometimes he takes a while to respond... I never said anything to him. However today I confirmed that he does it intentionally because there was a slight misunderstanding and he though I was upset about something and he quickly replied and once I cleared it up.. he took a while to respond again. At this point, I don't know how to deal with him.
He intentionally takes a long time to reply to my texts sometimes. How do I deal with him?
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