Is he the problem?

this guy I’m talking to is affectionate with me he always initiates the texts and he always ask questions to get to know me. He's really sweet, but every time I try to make plans he’s either busy or it’s some other excuse which I understand and I always have to plan the “dates”, he tells me he’s been tired a lot lately etc. He suddenly starts replying to my texts like 14-18 hours later now and so that really made me upset. So I stopped replying to him. His text basically said that he was going on a cruise (7 days ago) and he may not be able to reach me all the time. I still haven’t responded. I assume he just needed space and relaxation. But now he’s back and I still haven't responded I'm waiting for him to text me but he hasn’t yet. I don’t understand why.

Is he the problem?
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