Should I worry at all that he sucks at making plans?

In person everything is great, so please don't say 'he might break up with you'... because I don't think he'd do that because we have a blast together all the time.

Thing is, when I ask "When can you hang out next" he usually always says "I don't know" and when it comes to planning on seeing him again he sucks at it, to be blunt. It makes me worry that he doesn't like being with me, even if he says things like 'i like you' and 'i like being with you'... Should I worry? What should I do about it?
Should I worry at all that he sucks at making plans?
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